Grade 4 Math · Rounding and Estimation
Build Grade 4 Math skills with five 10-question practice tests on rounding whole numbers and decimals and estimating sums and differences.
These Grade 4 Math practice tests help students round whole numbers and decimals and estimate sums and differences. Students use the next digit to decide whether to round up or down and choose compatible numbers for quick estimates.
First identify the place to which you are rounding. Look at the digit immediately to its right: 5 or more means round up, and 4 or less means keep the rounding digit. For estimates, round the numbers before adding or subtracting.
For more Grade 4 Math practice, return to the Grade 4 Math category.
3. Test
A 10-question Grade 4 Math practice test on rounding whole numbers and decimals and estimating sums and differences.
Identify the requested place, inspect the next digit, round correctly, and use compatible numbers to estimate when needed.
Please select an answer first.
Correct answer: A
The correct answer is .
Round 48 to 50 and 31 to 30. Then + = .
Please select an answer first.
Correct answer: B
The correct answer is .
Round 67 to 70 and 24 to 20. Then + = .
Please select an answer first.
Correct answer: C
The correct answer is .
Round 196 to 200 and 302 to 300. The estimated sum is .
Please select an answer first.
Correct answer: D
The correct answer is .
Round 621 to 600 and 198 to 200. Then - = .
Please select an answer first.
Correct answer: A
The correct answer is .
Round 74 to 70 and 28 to 30. The estimated sum is .
Please select an answer first.
Correct answer: B
The correct answer is .
Round 153 to 200 and 249 to 200. The estimated sum is .
Please select an answer first.
Correct answer: C
The correct answer is .
Round 892 to 900 and 410 to 400. Then - = .
Please select an answer first.
Correct answer: D
The correct answer is .
Round 1,249 to 1,200 and 2,678 to 2,700. The estimated sum is .
Please select an answer first.
Correct answer: A
The correct answer is .
Round 506 to 500 and 198 to 200. Then - = .
Please select an answer first.
Correct answer: B
The correct answer is .
Round 38 to 40 and 62 to 60. The estimated sum is .
Look at the digit immediately to the right of the rounding place. Round up when it is 5 or more; round down when it is 4 or less.
An estimate is a close answer found by using easier numbers. Rounding numbers before an operation can make a quick estimate.
The page includes five mini tests with 10 questions each, for 50 Grade 4 Rounding and Estimation questions in total.
