Mr. Dion Powers of 10 Rule(Secondary)

Multiplication

100

32 x 29

Area Model or Stand Algorithm

928

200

257 x 21

Area Model or Stand Algorithm

5,397

300

615 x 137

Area Model or Stand Algorithm

84,255

400

797 x 528

Area Model or Stand Algorithm

420,816

500

1,584 x 216

Area Model or Stand Algorithm

342,144

Rounding

100

32.44 rounded to the nearest tenth

32.4

200

19.873 rounded to the nearest tenth

19.9

300

6.132 rounded to the nearest hundredth

6.13

400

381.195 rounded to the nearest hundredth

381.2

500

44.992 rounded to the nearest tenth

45

Multiplication by power of 10

100

78 x 10³

78,000

200

61.3 x 10³

61,300

300

10² x 0.345

34.5

400

24.36 x 10⁴

243,600

500

24.38 x 10⁵

2,438,000

Division by power of (1/10, 1/100, 1/1000)

100

4.3 divided by 1/10

0.43

200

386.0 divided by 1/100

3.860

300

543.65 divided by 1/1000

0.054

400

89,763.62 divided by 1/1000

89.76362

500

204,104.777 divided by 1/100

2041.04777

Division

100

296 divided by 46

Big 7 or Long Division

6 r20

200

4942 divided by 44

Big 7 or Long Division

112 r14

300

9050 divided by 87

Big 7 or Long Division

104 R2

400

2982 divided by 65

Big 7 or Long Division

45 r57

500

7576 divided by 24

Big 7 or Long Division

315 r16