Mental Math Quiz - Grade 5
Questions and Answers
- 1.
160 ÷x = 16. So, what is x?
- A.
16
- B.
80
- C.
40
- D.
10
Correct Answer
D. 10Explanation
The correct answer is 10. To find the value of x, we need to solve the equation 160 ÷ x = 16. By dividing 160 by 16, we get x = 10.Rate this question:
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- 2.
25680 =
- A.
2 +5 +6+8+0
- B.
2 ten thousands + fifty six hundreds + eighty
- C.
25+ 68+ 0
- D.
20000+ 5000+ 600+ 80
Correct Answer
D. 20000+ 5000+ 600+ 80Explanation
The given expression represents the number 25680 in expanded form. It breaks down the number into its place values, with 2 ten thousands (20000), fifty six hundreds (5600), and eighty (80). By adding these values together, we get the correct answer of 25680.Rate this question:
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- 3.
If the cost of the three tables is 975, then the cost of 1 table is 325.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The given statement is true because if the cost of three tables is 975, dividing this cost by three will give us the cost of one table, which is 325. Therefore, the cost of one table is indeed 325.Rate this question:
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- 4.
The greatest two-digits prime number is
- A.
11
- B.
99
- C.
93
- D.
97
Correct Answer
D. 97Explanation
The given options are 11, 99, 93, and 97. A prime number is a number that is only divisible by 1 and itself. Out of the given options, 11 and 97 are prime numbers. However, 97 is the greatest two-digit prime number as it is larger than 11. Therefore, the correct answer is 97.Rate this question:
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- 5.
174 - 38 = _____
- A.
84
- B.
144
- C.
136
- D.
148
Correct Answer
C. 136Explanation
The correct answer is 136 because when you subtract 38 from 174, you get 136.Rate this question:
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- 6.
25/38 + 7/38 = 32/68
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The given statement is false because the sum of 25/38 and 7/38 is not equal to 32/68. To add fractions, the denominators must be the same. In this case, the denominators are already the same, so we can add the numerators to get 32/38. However, this fraction cannot be simplified to 32/68, so the answer is false.Rate this question:
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- 7.
5h 15 min after 2:45 pm is ________
Correct Answer
8 pm, 8pm, 8 p.m. , 8:00 , 8:00 PM , 8:00 pm , 8:00 PmExplanation
5 hours and 15 minutes after 2:45 pm would be 8 pm. To determine this, we add 5 hours to 2:45 pm, which gives us 7:45 pm. Then, we add an additional 15 minutes, resulting in 8 pm.Rate this question:
- 8.
6/? = 36/42. What is ?
- A.
9
- B.
8
- C.
7
- D.
6
Correct Answer
C. 7Explanation
Let’s solve the equation for ?. The equation is:
6/?=36/42
We can cross-multiply to solve for ?:
6∗42=36∗?
Solving for ? gives:
?=366∗42
So, ? equals 7.Rate this question:
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- 9.
3/4 of 100 is ________
Correct Answer
75Explanation
To find 3/4 of 100, we can multiply 100 by 3 and then divide the result by 4. This calculation gives us 75, which means that 75 is 3/4 of 100.Rate this question:
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Current Version
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Jan 31, 2024Quiz Edited by
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Apr 04, 2020Quiz Created by
ROOPA
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