Rounding
Subtracting
Addition
Times
expanded form
100

Round 255 to the nearest ten

260

100

300 -125

=175

100

16,785+12,485

= 29,270

100

10x50

=50

100

1,538

1,000,500,30,8

200

567 to the nearest hundred

600

200

1,000- 123

=877

200

27,846+45,348

=73,194

200

7x8

=56

200

3,897

3,000,800,90,7

300

Round 843 to the nearest hundred

700

300

15,456-12,784

= 2,672

300

67,839+79,935

=147,774

300

13x13

=169

300

8,369

8,000,300,60,9

400

Round 1,126 to the nearest 10

1,130

400

50,987-36,745

= 14,242

400

924,936+256,815

=1,221,751

400

9x13

=117

400

13,358

13,000,300,50,8

500

Round 5,842 to the nearest thousand

6,000

500

236,564-167,578

= 68,986

500

810,929+839,947 

=1,650,876

500

12x24

=288

500

153,564

1,000,000,50,000,3,000,500,60,4