Rounding and Estimation
Quiz
•
Mathematics
•
5th Grade
•
Practice Problem
•
Hard
Swadheen Pathak
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 sec • 20 pts
Estimate the sum of 48 and 73.
110
120
140
125
Answer explanation
To estimate the sum of 48 and 73, round each number to the nearest tens place (50 and 70) and then add them together to get 120, which is the closest choice.
2.
MULTIPLE CHOICE QUESTION
10 sec • 20 pts
Estimate the product of 25 and 14.
320
280
300
350
Answer explanation
To estimate the product of 25 and 14, round both numbers to the nearest tens: 25 becomes 30 and 14 remains 14. Multiply the rounded numbers: 30 x 14 = 420. The closest answer choice is 300, which is the correct estimation.
3.
MULTIPLE CHOICE QUESTION
10 sec • 20 pts
Round 789 to the nearest hundred.
700
750
800
850
Answer explanation
To round 789 to the nearest hundred, we look at the tens digit, which is 8. Since 8 is 5 or greater, we round up to the next hundred, giving us 800.
4.
MULTIPLE CHOICE QUESTION
10 sec • 20 pts
Estimate the difference between 96 and 58.
38
24
42
16
Answer explanation
To find the difference between 96 and 58, subtract 58 from 96 which equals 38. Therefore, the correct answer is 38.
5.
MULTIPLE CHOICE QUESTION
10 sec • 20 pts
Round 3456 to the nearest thousand.
6000
5000
4000
3000
Answer explanation
To round 3456 to the nearest thousand, we look at the hundreds place, which is 5. Since 5 is greater than or equal to 5, we round up to 4000.
6.
MULTIPLE CHOICE QUESTION
10 sec • 20 pts
Estimate the quotient of 72 divided by 9.
10
7
8
6
Answer explanation
To estimate the quotient of 72 divided by 9, we can round 72 to the nearest multiple of 9, which is 72. Therefore, the quotient is 8.
7.
MULTIPLE CHOICE QUESTION
10 sec • 20 pts
Estimate the sum of 347 and 219.
600
560
450
500
Answer explanation
To estimate the sum of 347 and 219, round both numbers to the nearest hundred, giving 300 and 200. Add these rounded numbers to get 500, which is the estimated sum.
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