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Estimating Sums & Differences

Last updated 7 months ago
14 questions
Round & Estimate
Round the numbers to the leading digit. Estimate the sum or difference.

3,576 → 4,000 198,248 → 200,000
+ 1,307 → +1,000 − 116,431 → − 100,000
is about → 5,000 is about → 100,000
3
Round the numbers to the leading digit. Estimate the sum or difference.

675 → __________
+ 489 → __________
is about → __________
3
Round the numbers to the leading digit. Estimate the sum or difference.

21,481 → __________
− 12,500 → __________
is about → __________
3
Round the numbers to the leading digit. Estimate the sum or difference.

7,834 → __________
+ 3,106 → __________
is about → __________
3
Round the numbers to the leading digit. Estimate the sum or difference.

682,778 → __________
+ 130,001 → __________
is about → __________
3
Round the numbers to the leading digit. Estimate the sum or difference.

58,499 → __________
− 22,135 → __________
is about → __________
3
Round the numbers to the leading digit. Estimate the sum or difference.

902,279 → __________
− 615,999 → __________
is about → __________
3
Round the numbers to the leading digit. Estimate the sum or difference.

46,801 → _______
+ 34,700 → _______
is about → _______
3
Round the numbers to the leading digit. Estimate the sum or difference.

9,734 → _______
− 8,306 → _______
is about → _______
3
Round the numbers to the leading digit. Estimate the sum or difference.

65,606 → _______
+ 85,943 → _______
is about → _______
3
Round the numbers to the leading digit. Estimate the sum or difference.

5,218 → _______
− 3,673 → _______
is about → _______
3
Round the numbers to the leading digit. Estimate the sum or difference.

745 → _______
+ 451 → _______
is about → _______
3
Round the numbers to the leading digit. Estimate the sum or difference.

337,297 → _______
− 168,931 → _______
is about → _______
Estimate, Then Compare
4
Write < or > for each problem.

329 + 495 __________ 800

11,569 − 6,146 __________ 6,000

563 − 317 __________ 300

8,193 − 6,668 __________ 1,000
4
Write < or > for each problem.

41,924 − 12,445 __________ 50,000

634,577 + 192,556 __________ 800,000

18,885 + 12,691 __________ 30,000

713,096 − 321,667 __________ 400,000