Estimation

Addition

100

104+298

Round to Nearest Hundred

400

200

150+349

Round to Nearest Hundred

500

300

3456+6789

Round to the Nearest Thousand

10,000

400

6698+9099

Round to the Nearest Thousand

16,000

500

43,525+55,123

Round to the Nearest Ten Thousand

100,000

Rounding

100

34

Round to the Nearest Ten

30

200

45

Round to the Nearest Ten

50

300

367

Round to the Nearest Hundred

400

400

948

Round to the Nearest Hundred

900

500

9712

Round to the Nearest Thousand

10,000

Subtraction

100

68-43

Round to the Nearest Ten

30

200

28-21

Round to the Nearest Ten

10

300

456-321

Round to the nearest Hundred

200

400

784-215

Round to the Nearest Hundred

600

500

4582-1402

Round to the Nearest Thousand

4000