Rounding to the nearest 10
Rounding to the nearest 100
Rounding to the nearest 1000
Estimating Sums
Estimating Differences
100

Round 647 to the nearest 10

650

100

Round 83921 to the nearest 100

83900

100

Round 3647 to the nearest 1000

4000

100

Estimate the sum by rounding to the nearest 100

6231 + 4123

10300

100

Estimate the difference by rounding to the nearest 100

460 - 390

100

200

Round 8544 to the nearest 10

8540

200

Round 1931 to the nearest 100

1900

200

Round 94217 to the nearest 1000

94000

200

Estimate the sum by rounding to the nearest 100

290 + 360

700

200

Estimate the difference by rounding to the nearest 100

941 - 463

400

300

Round 82921 to the nearest 10

82920

300

Round 5521 to the nearest 100

5500

300

Round 268597 to the nearest 1000

269000

300

Estimate the sum by rounding to the nearest 100

523 + 285

800

300

Estimate the difference by rounding to the nearest 1000

64857 - 42345

23000

400

Round 4905 to the nearest 10

4910

400

Round 1587 to the nearest 100

1600

400

Round 7347 to the nearest 1000

7000

400

Estimate the sum by rounding to the nearest 1000

7357 + 6425

13000

400

Estimate the difference by rounding to the nearest 1000

6973 - 3985

3000

500

Round 742 to the nearest 10

740

500

Round 28681 to the nearest 100

28700

500

Round 1503 to the nearest 1000

2000

500

Estimate the sum by rounding to the nearest 10

1275 + 3943

5220

500

Estimate the difference by rounding to the nearest 10000

29753 - 13131

20000

M
e
n
u