Rounding 10, 100

Round to nearest 10

100

Round 43 to the nearest 10

40

200

Round 78 to the nearest 10

80

300

Round 108 to the nearest 10

110

400

Round 234 to the nearest 10

230

500

Round 1516 to the nearest 10

1520

Round to nearest 100

100

Round 230 to the nearest 100

200

200

Round 716 to the nearest 100

700

300

Round 1490 to the nearest 100

1500

400

Round 1786 to the nearest 100

1800

500

Round 2450 to the nearest 100

2500

Nearest 10 and add

100

Round 46 and 17 to the nearest ten, then add

50+20 = 70

200

Round 34 and 81 to the nearest 10 and add

30+80 = 110

300

Round 57 and 32 to the nearest 10 and add

60+30 = 90

400

Round 214 and 318 to the nearest 10 and add

210+320=530

500

Round 67 and 809 to the nearest 10 and add

70+810 = 880

Nearest 100 and add

100

Round 703 and 63 to the nearest 100 and add

700+100=800

200

Round 79 and 240 to the nearest 100 and add

100+200=300

300

Round 760 and 113 to the nearest 100 and add

800+100=900

400

Round 1609 and 320 to the nearest 100 and add

1600+300=1900

500

Round 8080 and 410 to the nearest 100 and add

8100+400=8500

Nearest 10 and subtract

100

Round 78 and 14 to the nearest 10 and subtract

80-10=70

200

Round 28 and 8 to the nearest 10 and subtract

30-10=20

300

Round 68 and 53 to the nearest 10 and subtract

70-50=20

400

Round 473 and 135 to the nearest 10 and subtract

470-140=330

500

Round 1755 and 679 to the nearest 10 and subtract

1760-680=1080