8's
subtraction
rounding to the nearest 100
decimals
factors
100

2x8

16

100

100-52

48

100

794

1000

100

0.2 + 0.2

0.4

100

list the factors of 12

1, 12, 6, 2, 3, 4

200

3x8

24

200

68-32

36

200

8999

9000

200

0.3 + 0.3 + 0.3

0.9

200

list the factors of 16

1, 16, 4, 8, 2, 

300

5x8

40

300

107-58

49

300

12,367

12,000

300

0.9 + 0.2

1.1

300

list the factors of 42

1, 42, 6, 7, 2, 21, 14, 3

400

8x8

64

400

267-175

92

400

48,702

49,000

400
1.6 x 2

3.2

400

list the factors of 64

1, 64, 2, 32, 8, 16, 4, 

500

12 x 8

96

500

1059-567

492

500

1,098,501

1,099,500

500

4.7 - 2.8

1.9

500

list the factors of 63

1, 63, 9, 7, 21, 3