Jss2 Mathematics Quiz Questions And Answers
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If two numbers are added together, what it is called?
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Sum
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Division
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Multiplication
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Subtraction
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Get ready to test your knowledge with this JSS2 Mathematics Questions and Answers quiz! Designed for students in Junior Secondary School 2, this quiz focuses on key mathematical concepts like algebra, geometry, and statistics. It is a great way to assess your understanding of topics such as fractions, equations, angles, and data interpretation.
Each JSS2 mathematics exam questions and See moreanswers are carefully selected to match the JSS2 syllabus, making it an effective test. You will encounter multiple-choice questions that challenge your problem-solving and logical thinking abilities. This quiz will help you identify areas where you excel and those that need improvement.
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- 2.
The following are polygons EXCEPT ___.
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Circle
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Quadrilateral
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Hexagon
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Heptagon
Correct Answer
A. CircleExplanation
A "Circle" is not considered a polygon. The other options, "quadrilateral," "hexagon," and "heptagon," are polygons because they have straight sides and are made up of line segments. In contrast, a circle is a curved shape with no straight sides, and it is not classified as a polygon.Rate this question:
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- 3.
How many lines of symmetry have a square?
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3
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4
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5
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6
Correct Answer
A. 4Explanation
A square has 4 lines of symmetry. Each line passes through the midpoints of opposite sides or diagonally through opposite corners. These lines divide the square into two equal halves. Thus, the number of lines of symmetry for a square is 4.Rate this question:
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- 4.
What is the value of 962?
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6226
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7226
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9216
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7216
Correct Answer
A. 9216Explanation
The expression 9² represents 9 multiplied by itself. So, 9 × 9 = 81. This is the correct value of 9². The other options, 6226, 7226, 9216, and 7216, are incorrect as they do not match the result of 9², which is 81. Therefore, the correct answer is 81.Rate this question:
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- 5.
The probability of a student passing JSSCE Mathematics is 70/100. What is the probability that the student will fail?
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10/100
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30/100
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50/100
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70/100
Correct Answer
A. 30/100Explanation
The total probability of all outcomes must add up to 1 or 100%. The probability of passing is 70/100, so the probability of failing is the complement of this. Subtract the probability of passing from 1:1 - 70/100 = 30/100.Therefore, the probability that the student will fail is 30/100. The other options are incorrect because they do not represent the correct complement to the passing probability.Rate this question:
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- 6.
Round off 3.9695 to 2 decimal places.
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3.98
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3.97
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3.96
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3.95
Correct Answer
A. 3.97Explanation
To round off 3.9695 to two decimal places, we first look at the third decimal place, which is 9. Since 9 is greater than or equal to 5, we round the second decimal place up by 1. Therefore, 3.9695 rounded to two decimal places becomes 3.97. The other options are incorrect because they either round too low or do not follow the proper rounding rules.Rate this question:
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- 7.
Find the Simple Interest on ₦500.00 for 2 years at 4%.
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₦30.00
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₦40.00
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₦50.00
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₦60.00
Correct Answer
A. ₦40.00Explanation
The correct answer is B. ₦40.00. The formula to calculate simple interest is Principal x Rate x Time. In this case, the principal is ₦500.00, the rate is 4%, and the time is 2 years. Plugging these values into the formula, we get ₦500.00 x 0.04 x 2 = ₦40.00. Therefore, the simple interest on ₦500.00 for 2 years at 4% is ₦40.00.Rate this question:
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- 8.
What is the correct name for one thousand billion?
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One hundred
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One billion
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One gazillion
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One trillion
Correct Answer
A. One trillionExplanation
One thousand billion is equal to one trillion. In the American numbering system, a billion is 1,000,000,000 (10⁹), and a trillion is 1,000,000,000,000 (10¹²). Therefore, one thousand billion equals one trillion. The other options are incorrect because they don't correctly represent the value of one thousand billion. Thus, the correct name for one thousand billion is "one trillion."Rate this question:
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- 9.
Express 18 as a product of its prime factors.
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3x3=32
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2x3x3=21x32
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2x2x3x3 = 22x32
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2x2x3=22x31
Correct Answer
A. 2x3x3=21x32Explanation
To find the prime factors of 18, divide it by the smallest prime number, 2: 18 ÷ 2 = 9. Next, divide 9 by 3: 9 ÷ 3 = 3. Divide again by 3: 3 ÷ 3 = 1. The prime factorization is 2 × 3 × 3 or 2¹ × 3².Rate this question:
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- 10.
Find the HCF of 36 and 60.
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12
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14
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16
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18
Correct Answer
A. 12Explanation
The HCF (Highest Common Factor) of two numbers is the largest number that divides both of them without leaving a remainder. To find the HCF of 36 and 60, we can list all the factors of both numbers and find the largest one they have in common. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The largest factor they have in common is 12, so the correct answer is option 1.Rate this question:
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- 11.
Express 20% as a decimal number.
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2.00
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0.5
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0.2
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0.05
Correct Answer
A. 0.2Explanation
To express a percentage as a decimal number, you divide the percentage by 100. In this case, to express 20% as a decimal number, you divide 20 by 100, which equals 0.2. Therefore, the correct answer is option 3, 0.2.Rate this question:
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- 12.
What is 30% of N900?
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N270
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N27
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N90
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N85
Correct Answer
A. N270Explanation
To find 30% of N900, multiply 900 by 0.30 (since 30% is the same as 30/100 or 0.30).
900 × 0.30 = 270.
Thus, 30% of N900 is N270. The other options are incorrect because they do not represent the correct calculation of 30% of N900.Rate this question:
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- 13.
Convert 1/3 to decimal fraction and give your answer to 4 decimal places.
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0.3330
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0.3333
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0.3334
Correct Answer
A. 0.3333Explanation
.Rate this question:
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- 14.
The value of 7—(—15) is
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-8
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22
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8
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None of the above
Correct Answer
A. 22Explanation
.Rate this question:
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- 15.
The reciprocal of x2 is ___.
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X-2
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x2-
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X2
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1-x
Correct Answer
A. X-2Explanation
The reciprocal of x^2 is x^-2 because when we take the reciprocal of a number, we flip it upside down. In this case, we are taking the reciprocal of x^2, so we flip it to get 1/x^2. To simplify this expression, we can bring the x^2 to the denominator by changing the sign of the exponent, resulting in x^-2.Rate this question:
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- 16.
The LCM of 5ab2 and 3a2b is:
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Ab
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3a/2b
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5a3b3
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15a2b2
Correct Answer
A. 15a2b2Explanation
The LCM (Least Common Multiple) of two numbers is the smallest number that is divisible by both numbers. In this case, the given numbers are 5ab2 and 3a2b. To find the LCM, we need to find the highest power of each variable that appears in either number. In this case, the highest power of 'a' is 2 and the highest power of 'b' is 2. Therefore, the LCM is 15a2b2, which is Option 4.Rate this question:
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- 17.
Find the highest common factor of 325, 350, and 375
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13
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15
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21
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25
Correct Answer
A. 25Explanation
The highest common factor (HCF) of three numbers can be found by finding the factors of each number and then identifying the largest factor that is common to all three numbers. The factors of 325 are 1, 5, 13, 25, 65, and 325. The factors of 350 are 1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, and 350. The factors of 375 are 1, 3, 5, 15, 25, 75, and 375. The largest factor that is common to all three numbers is 25, so the correct answer is option D.Rate this question:
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- 18.
Express 0.000 000 000347 in standard form.
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47 x 10-10
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3.47 x 10-9
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3.47 x 10-8
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3.47 x 10-10
Correct Answer
A. 3.47 x 10-10 -
- 19.
The product of 0.017 and 100 is ____________
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0.00017
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0.0017
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0.017
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1.7
Correct Answer
A. 1.7Explanation
To find the product of 0.017 and 100, you multiply the numbers. When you multiply 0.017 by 100, you shift the decimal point two places to the right, resulting in 1.7. The other options are incorrect because they either place the decimal in the wrong position or miscalculate the product. Therefore, the correct result of multiplying 0.017 by 100 is 1.7.Rate this question:
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- 20.
Simplify ab (a – b)
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A2b – ab2
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Ab2 – ab
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Ab – a2b2
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A2b – ab
Correct Answer
A. A2b – ab2Explanation
To simplify the expression, we use the distributive property:
ab (a – b) = ab * a – ab * b
This simplifies to a²b – ab²Rate this question:
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- 21.
John thinks of a number. 18 is subtracted from the number, the result gives – 2. What is the number?
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14
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16
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18
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20
Correct Answer
A. 16 -
- 22.
Express 6561 in index form.
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93
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94
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95
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96
Correct Answer
A. 94Explanation
To express 6561 in index form, we need to find a number that, when raised to a power, results in 6561. By trial or calculation, we find that 9 raised to the power of 4 gives 6561 (9 × 9 × 9 × 9 = 6561). Therefore, the correct index form of 6561 is 9⁴. This demonstrates how powers work to express repeated multiplication in a simpler form.Rate this question:
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- 23.
If N9 600 was shared among three boys Ola, Tope, and Jide in the ratio 3: 4: 5, respectively, what is Jide’s share?
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N2,400
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N4,000
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N950
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N3,200
Correct Answer
A. N4,000Explanation
Jide's share can be found by dividing the total amount shared (N9,600) in the ratio of 3:4:5. To find Jide's share, we need to find the fraction of the total amount that corresponds to his ratio. The fraction for Jide is 5 out of the total ratio of 3+4+5, which is 12. Therefore, Jide's share is (5/12) * N9,600 = N4,000.Rate this question:
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- 24.
Complete the following sentence correctly. Vertically opposite angles ___.
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Are equal
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Add up to 1800
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Are corresponding
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Are alternate
Correct Answer
A. Are equalExplanation
Vertically opposite angles are equal. This is a basic property of intersecting lines, where two pairs of opposite angles are formed. These angles have the same measure and are considered congruent.Rate this question:
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- 25.
Number 1, 2, 3, 4, 5, 6 ___ are called.
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Recurring decimal
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Whole number
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Natural number
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Integers
Correct Answer
A. Natural numberExplanation
Natural numbers are positive integers starting from 1 (1, 2, 3, …). These numbers are used for counting and exclude zero, fractions, and negative numbers. Unlike integers or whole numbers, natural numbers represent only positive, whole values without a zero. The set 1, 2, 3, etc., does not include negatives or decimals, making it distinct from other number groups. Since 1, 2, 3, etc., are part of this set, the correct classification is natural numbers.Rate this question:
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- 26.
Find the reciprocal of 2.5 ___.
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0.0004
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0.004
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0.04
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0.4
Correct Answer
A. 0.4Explanation
The reciprocal of 2.5 is found by dividing 1 by 2.5: 1 ÷ 2.5 = 0.4. To simplify, write 2.5 as a fraction: 1 ÷ (5/2). Multiplying by the reciprocal: 1 × (2/5) = 2/5 = 0.4. Converting the decimal 2.5 into a fraction enables easier calculations, ensuring accuracy in deriving the reciprocal. The result is 0.4.Rate this question:
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- 27.
Simplify X6÷X3
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X5
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X4
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X3
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X2
Correct Answer
A. X3Explanation
The expression X6/X3 can be simplified by dividing the exponents. When dividing variables with the same base, you subtract the exponents. Therefore, X6/X3 is equal to X6-3, which simplifies to X3.Rate this question:
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- 28.
Simplify ( x/3)2
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2x/3
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X2/9
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x2/6
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X2/3
Correct Answer
A. X2/9Explanation
To simplify (x/3)², you square both the numerator and denominator. The numerator, x, squared is x², and the denominator, 3, squared is 9. Therefore, the simplified expression becomes x²/9. This shows how exponents apply to both the numerator and denominator separately, resulting in the final simplified form.Rate this question:
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- 29.
The number of pupils in a school is 875. If 350 are girls, what percentage of the pupils are boys?
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16%
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60%
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25%
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45%
Correct Answer
A. 60%Explanation
The correct answer is B. 60%. Since the total number of pupils is 875 and 350 of them are girls, the number of boys can be found by subtracting the number of girls from the total number of pupils: 875 - 350 = 525. To find the percentage of boys, divide the number of boys by the total number of pupils and multiply by 100: (525 / 875) * 100 = 60%.Rate this question:
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- 30.
Mr. Ojo made a profit of 32% on an article he bought for N3,200.00. How much did he sell the article?
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N2,024.00
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N2,176.00
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N3,200.00
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N4,224.00
Correct Answer
A. N4,224.00 -
- 31.
If 13 is the mean of the following set of numbers: 12, 11, 14, and x, what is the value of x?
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11
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12
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13
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15
Correct Answer
A. 15Explanation
Option iii: (1/4x + 2) is the correct answer. This is because (x+8)/4 can be simplified as (1/4)x + (8/4), which is equal to (1/4x + 2). Option i: 1/4(x + 8) is incorrect because it expands the expression instead of simplifying it. Option ii: (x + 2) is also incorrect because it does not include the division by 4.Rate this question:
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- 32.
A trader buys a gallon of palm oil for N1,500.00 and sells it at a profit of 10%. Calculate the selling price.
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N1,750.00
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N1,650.00
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N1,550.00
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N1,450.00
Correct Answer
A. N1,650.00Explanation
Selling price = cost price + profit. Profit = cost price × profit %. Here, profit = 1500 × 10/100 = 150. Add this to the cost price: 1500 + 150 = 1650. The calculation breaks into two steps: determining the profit and adding it to the cost. Thus, the selling price is 1650.Rate this question:
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- 33.
Solve the equation 2 ½ = 1/y
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1/5
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3/5
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2/5
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4/5
Correct Answer
A. 2/5Explanation
The equation 2 ½ = 1/y can be solved by multiplying both sides of the equation by y. This eliminates the fraction on the left side of the equation. The equation becomes 2y = 1. To isolate y, divide both sides of the equation by 2. This gives y = 1/2. However, this is not one of the answer options provided. Therefore, the correct answer is not available.Rate this question:
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- 34.
Express as a single number: 3.8 x 104 – 9.7 x 10
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37903
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28700
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59700
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49700
Correct Answer
A. 37903 -
- 35.
Find the mean score of these scores: 2, 3, 0, 8, 7, 5, 9, 6
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3.75
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5.50
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5.00
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4.00
Correct Answer
A. 5.00Explanation
The mean score is calculated by adding all the scores together and then dividing the sum by the total number of scores. In this case, the sum of the scores is 2+3+0+8+7+5+9+6=40. Since there are 8 scores, the mean score is 40/8=5.00. Therefore, the correct answer is C. 5.00.Rate this question:
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- 36.
Find the probability of choosing a vowel from ‘KETU–LAGOS’.
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1/9
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2/9
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1/2
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4/9
Correct Answer
A. 4/9Explanation
The given question asks for the probability of choosing a vowel from the given word "KETU-LAGOS". To find the probability, we need to count the number of vowels in the word and divide it by the total number of letters in the word. The word "KETU-LAGOS" has a total of 10 letters, out of which there are 4 vowels (E, U, A, O). Therefore, the probability of choosing a vowel from the given word is 4/10, which simplifies to 2/5 or 4/9.Rate this question:
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- 37.
Express 0.0001 in standard form.
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1 x 104
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1 x 103
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1 x 10-3
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1 x 10-4
Correct Answer
A. 1 x 10-4Explanation
In standard form, a number is written as a coefficient between 1 and 10, multiplied by a power of 10. For 0.0001, we move the decimal point four places to the right, making it 1 x 10⁻⁴. This represents the number in standard form. The other options are incorrect because they do not correctly reflect the position of the decimal point for 0.0001.Rate this question:
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- 38.
Which of the following fractions is the smallest fraction: 3/4, 5/6, 1/2 and 12/15?
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12/15
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1/2
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5/6
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3/4
Correct Answer
A. 1/2Explanation
To compare fractions, we need to find a common denominator. The least common denominator for 4, 6, 2, and 15 is 60. Converting each fraction to have a denominator of 60, we get:
3/4 = 45/60
5/6 = 50/60
1/2 = 30/60
12/15 = 48/60
The smallest fraction is the one with the smallest numerator, which is 1/2.Rate this question:
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- 39.
If a = 2, put (>, <, , or =) in the box for the inequality below: -23___ -45
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>
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≥
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<
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=
Correct Answer
A. >Explanation
When a = 2, the inequality is -23 compared to -45. Since -23 is greater than -45 on the number line, the correct symbol to place between -23 and -45 is ">". This means that -23 is indeed greater than -45. Therefore, the correct symbol is ">", indicating that -23 is larger thanRate this question:
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- 40.
If a rectangle has a length of 10 cm and a width of 5 cm, what is the perimeter of the rectangle?
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15 cm
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30 cm
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25 cm
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20 cm
Correct Answer
A. 30 cm -
- 41.
Express 675 000 000 in a standard form.
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6.75 x 108
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6.75 x 107
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6.75 x 106
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6.75 x 105
Correct Answer
A. 6.75 x 108Explanation
The correct answer is A. 6.75 x 10^8. This is because in standard form, a number is expressed as a decimal between 1 and 10 multiplied by a power of 10. So, 675,000,000 can be written as 6.75 multiplied by 100,000,000, which can be further simplified to 6.75 x 10^8.Rate this question:
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- 42.
These numbers are square numbers except.
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324
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224
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196
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169
Correct Answer
A. 224Explanation
The given numbers are 324, 224, 196, and 169. To determine which number is not a square number, we need to find the square root of each number. The square root of 324 is 18, the square root of 224 is not a whole number, the square root of 196 is 14, and the square root of 169 is 13. Since the square root of 224 is not a whole number, it is not a square number.Rate this question:
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- 43.
Factorize 24pz – 8pr.
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8p (3z –r)
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8p (z – 3r)
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8p (3z + r)
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(8p (4z – r)
Correct Answer
A. 8p (3z –r)Explanation
The given expression can be factorized as 8p(3z - r). This can be done by factoring out the greatest common factor, which is 8p, from both terms in the expression. The remaining terms inside the parentheses are (3z - r), which cannot be simplified further. Therefore, the correct factorization is 8p(3z - r).Rate this question:
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- 44.
If 15 men dig a trench for 10 days, how many men will be required to dig the trench in 2 days?
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150 men
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75 men
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60 men
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30 men
Correct Answer
A. 75 men -
- 45.
Factorize 81 + 18a + a.
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(a+9) (a-9)
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(a+9) (a+9)
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(a+3) (a+27)
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(a+1)(a+81)
Correct Answer
A. (a+9) (a+9)Explanation
To factorize the given expression, 81 + 18a + a^2, we need to find two binomials that, when multiplied, produce the given expression.
Let's consider the given options:
(a+9)(a-9): When multiplied, this would result in a^2 - 81, which is different from the given expression.
(a+9)(a+9): When multiplied, this would result in a^2 + 18a + 81, which matches the given expression.
(a+3)(a+27): When multiplied, this would result in a^2 + 30a + 81, which is different from the given expression.
(a+1)(a+81): When multiplied, this would result in a^2 + 82a + 81, which is different from the given expression.
Therefore, the correct factorization of 81 + 18a + a^2 is (a+9)(a+9).Rate this question:
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- 46.
Find the product of the square root of 16 and the square of 9 is
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3240
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1296
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324
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144
Correct Answer
A. 324Explanation
The square root of 16 is 4, and the square of 9 is 81. Multiplying these results gives 4 * 81 = 324. Therefore, the correct answer is 324. The other options are incorrect as they do not match the correct product of 4 and 81.Rate this question:
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- 47.
In bisecting any line, the following are required.
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A ruler and a pair of dividers
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A ruler and protractor
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A ruler and a pair of compasses
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A ruler and pencil
Correct Answer
A. A ruler and a pair of compassesExplanation
To bisect any line, a ruler and a pair of compasses are required. A ruler is needed to measure the length of the line accurately, while a pair of compasses is used to draw arcs that intersect the line at two points. The midpoint of the line is then determined by drawing a straight line connecting the two points of intersection. A protractor is not necessary for bisecting a line, as it is used for measuring angles. A pencil is a common tool used for drawing, but it is not specifically required for bisecting a line.Rate this question:
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- 48.
The lowest common denominator of 1/4, 2/3, 4/5, 5/6 and 5/10 and is ___.
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900
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90
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50
-
60
Correct Answer
A. 60Explanation
The lowest common denominator of a set of fractions is the smallest number that each denominator can divide into evenly. In this case, the denominators are 4, 3, 5, 6, and 10. The lowest common denominator for these numbers is 60, as it is the smallest number that all of these denominators can divide into evenly.Rate this question:
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- 49.
The value of the 4 in 26.645 is ___
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4 thousandth
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4 hundredths
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4 tenths
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Option 4
Correct Answer
A. 4 hundredthsExplanation
The value of the 4 in 26.645 is 4 hundredths. This is because the digit 4 is in the hundredths place, which is two places to the right of the decimal point. In decimal notation, each place value to the right of the decimal point represents a fraction of the whole number. Therefore, the digit 4 in this number represents 4 out of 100, or 0.04.Rate this question:
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