Key Stage 3 Mental Arithmetic Test
Mental Maths Test
Questions and Answers
- 1.
Y x y x y x y =
- A.
4y
- B.
Y to the power of 4
- C.
Yyyy
- D.
1
Correct Answer
B. Y to the power of 4Explanation
The given expression is a sequence of y and x repeated multiple times. The pattern suggests that every y is multiplied by x, resulting in the next y. This process is repeated four times, so the final expression is y to the power of 4.Rate this question:
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- 2.
7a + 2b + 3a + 5b =
- A.
17ab
- B.
10a + 7b
- C.
9ab + 8ab
- D.
9a + 8a
Correct Answer
B. 10a + 7bExplanation
The given equation is 7a + 2b + 3a + 5b. We can combine like terms by adding the coefficients of the same variables. So, combining the coefficients of 'a', we get 7a + 3a = 10a. Similarly, combining the coefficients of 'b', we get 2b + 5b = 7b. Therefore, the simplified form of the equation is 10a + 7b, which matches the given answer.Rate this question:
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- 3.
What Is 0.2 x 0.3?
- A.
0.05
- B.
0.5
- C.
0.6
- D.
0.06
Correct Answer
D. 0.06Explanation
The correct answer is 0.06 because when you multiply 0.2 by 0.3, you get the product of 0.06.Rate this question:
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- 4.
1.7 , 1.8 , 1.9 , ...Finish Off The Sequence Until You Reach A Whole Odd Number
- 5.
0.2 + 0.5 + ... =
Correct Answer
0.3
3/10Explanation
The sum of the series 0.2 + 0.5 + ... is equal to 0.3 or 3/10. This can be determined by recognizing that each term in the series is increasing by 0.3, and the sum of an infinite geometric series can be calculated using the formula S = a / (1 - r), where a is the first term and r is the common ratio. In this case, a = 0.2 and r = 0.5. Plugging these values into the formula gives S = 0.2 / (1 - 0.5) = 0.2 / 0.5 = 0.4. Therefore, the sum of the series is 0.4, which is equal to 0.3 or 3/10.Rate this question:
- 6.
- 170 + 19 =
Correct Answer
-151
Negative one hundred and fifty one
Minus One Hundred And Fifty OneExplanation
The given equation is 170 + 19. When we add 170 and 19 together, we get a sum of 189. However, the given answer is -151, which is incorrect. The correct answer should be 189.Rate this question:
- 7.
2f + f = 30What Does f Equal To ?
- A.
8
- B.
10
- C.
0.1
- D.
11
Correct Answer
B. 10Explanation
In the given equation, 2f + f = 30, we need to find the value of f. Combining like terms, we get 3f = 30. Dividing both sides by 3, we find that f = 10.Rate this question:
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- 8.
If 48 x 72 = 3456What Is 24 x 72 ?
- A.
1223
- B.
864
- C.
1728
- D.
3456
Correct Answer
C. 1728Explanation
The given equation states that 48 multiplied by 72 equals 3456. To find the product of 24 multiplied by 72, we can observe that 24 is half of 48. Therefore, the product will also be half of 3456. Half of 3456 is 1728.Rate this question:
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- 9.
Estimate What 59.8 divided by 2.99
- A.
20
- B.
30
- C.
25
- D.
35
Correct Answer
A. 20Explanation
To estimate 59.8 divided by 2.99, we can round both numbers to the nearest whole number. 59.8 rounds to 60, and 2.99 rounds to 3. Dividing 60 by 3 gives us 20. Therefore, the estimated answer is 20.Rate this question:
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- 10.
36 : 9 Simlify This Down To It's Simpliest Form
- A.
4
- B.
4 : 1
- C.
4 : 3
- D.
12 : 3
Correct Answer
B. 4 : 1Explanation
The given expression "36 : 9" can be simplified by dividing both numbers by their greatest common divisor, which is 9. Therefore, "36 : 9" simplifies to "4 : 1".Rate this question:
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- 11.
13kdIf k = 3 and d = 2Then What does 13kd equal?
Correct Answer
78Explanation
The expression 13kd can be simplified by substituting the given values of k and d. Since k = 3 and d = 2, we can rewrite 13kd as 13(3)(2). Multiplying these values together gives us 78, which is the final result.Rate this question:
- 12.
Write 1/8 as a Decimal
Correct Answer
0.125Explanation
To convert a fraction to a decimal, we divide the numerator (1) by the denominator (8). In this case, 1 divided by 8 equals 0.125. Therefore, the decimal representation of 1/8 is 0.125.Rate this question:
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Current Version
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Mar 19, 2023Quiz Edited by
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Apr 06, 2010Quiz Created by
27roguntimehin
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