Math Quiz For Class 8 With Answers
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Get ready to challenge your math skills with our comprehensive Math Quiz for Class 8. Designed specifically for eighth graders, this quiz covers a wide range of topics that are crucial at this stage of learning. From mastering the complexities of algebraic expressions and equations to diving deep into the intricacies of geometry and data interpretation, our quiz offers a robust review of all essential mathematical concepts.
Whether you’re looking to solidify your understanding of fractions and decimals, or you want to test your prowess in more advanced topics like statistics and probability, our quiz provides a perfect platform. Read moreEach question is crafted to not only test your knowledge but also to enhance your problem-solving skills, encouraging you to think critically and logically.
This Math Quiz for Class 8 is ideal for students seeking to boost their grades, prepare for upcoming tests, or simply gain more confidence in their mathematical abilities. Engage with our interactive questions, get instant feedback, and track your progress as you learn.
Math Quiz for Class 8 Questions and Answers
- 1.
What is the result of 15 divided by 3 times 2 plus 5?
- A.
20
- B.
25
- C.
15
- D.
10
Correct Answer
C. 15Explanation
To find the result of the expression 15÷3×2+5, we need to follow the order of operations, which is typically remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication, and Division (from left to right), Addition and Subtraction (from left to right)).
Let's break it down step-by-step:
Division and Multiplication (from left to right):
15÷3×2
First, perform the division:
15÷3=5
Then, multiply the result by 2:
5×2=10
Addition:
10+5
Perform the addition:
10+5=15
Therefore, the result of 15÷3×2+5 is 15.Rate this question:
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- 2.
Which term describes a polygon with all sides and angles equal?
- A.
Regular
- B.
Irregular
- C.
Equilateral
- D.
Quadrilateral
Correct Answer
A. RegularExplanation
A regular polygon is defined as having all sides and all angles equal. This is distinct from an equilateral polygon, which specifically refers to equal sides, and a regular shape fulfills both conditions, having equal sides and angles.Rate this question:
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- 3.
Simplify: (-3)^2
- A.
6
- B.
-9
- C.
9
- D.
-6
Correct Answer
C. 9Explanation
When you square a negative number, such as -3, the result is positive because a negative multiplied by a negative gives a positive. Thus, (-3) times (-3) equals 9.Rate this question:
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- 4.
What is the prime factorization of 60?
- A.
2^2 x 3 x 5
- B.
2 x 3 x 5
- C.
2^2 x 5
- D.
3 x 5
Correct Answer
A. 2^2 x 3 x 5Explanation
Divide 60 by the smallest prime number 2, giving 30. Divide 30 by 2 again, giving 15. Then divide 15 by 3, giving 5, which is a prime number. The prime factors of 60 are thus 2 squared (because 2 is used twice), 3, and 5.Rate this question:
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- 5.
Calculate the area of a triangle with a base of 10 cm and a height of 14 cm.
- A.
140 cm squared
- B.
70 cm squared
- C.
50 cm squared
- D.
120 cm squared
Correct Answer
B. 70 cm squaredExplanation
The area of a triangle is found using the formula: area = (base x height) / 2. Plugging in the values, (10 x 14) / 2 equals 70. Therefore, the area is 70 square centimeters.Rate this question:
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- 6.
Solve for x if 4x + 5 = 21.
- A.
4
- B.
3
- C.
5
- D.
2
Correct Answer
A. 4Explanation
To isolate x, first subtract 5 from both sides of the equation, giving 4x = 16. Then divide both sides by 4, resulting in x = 4. This value satisfies the original equation when checked.Rate this question:
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- 7.
What is the volume of a cube with side length 3 cm?
- A.
9 cm cubed
- B.
18 cm cubed
- C.
27 cm cubed
- D.
24 cm cubed
Correct Answer
C. 27 cm cubedExplanation
The volume of a cube is calculated by raising the side length to the power of three. For a cube with side length 3 cm, the volume is 3 x 3 x 3, which equals 27 cubic centimeters.Rate this question:
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- 8.
If the circumference of a circle is 31.4 cm, what is its diameter? (Use pi approximately equal to 3.14)
- A.
10 cm
- B.
5 cm
- C.
20 cm
- D.
15 cm
Correct Answer
A. 10 cmExplanation
The formula for the circumference of a circle is pi times the diameter. Rearrange to find the diameter: diameter = circumference/pi. Thus, 31.4 / 3.14 equals 10 cm.Rate this question:
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- 9.
Convert 1500 milliliters to liters.
- A.
1.5 liters
- B.
15 liters
- C.
0.15 liters
- D.
150 liters
Correct Answer
A. 1.5 litersExplanation
Since 1000 milliliters make up one liter, to convert milliliters to liters, divide by 1000. Therefore, 1500 milliliters divided by 1000 equals 1.5 liters.Rate this question:
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- 10.
What is the probability of rolling an even number on a standard six-sided die?
- A.
1/2
- B.
1/3
- C.
2/3
- D.
1/6
Correct Answer
A. 1/2Explanation
A standard six-sided die has three even numbers: 2, 4, and 6. With six possible outcomes, the probability of rolling an even number is the number of favorable outcomes divided by the total outcomes, which is 3/6 or simplified to 1/2.Rate this question:
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Current Version
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Jun 19, 2024Quiz Edited by
ProProfs Editorial Team
Expert Reviewed by
Janaisa Harris -
Oct 03, 2009Quiz Created by
Hannahbanana99
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