definitions
equivalent fractions
7's multiplication
8's multiplication
9's multiplication
100

the bottom number in a fraction

denominator

100

1/2 

2/4, 3/6, 4/8, 5/10

100

7x4

28

100

8x4

32

100

9x4

36

200

the top number in fraction

the numerator

200

1/3

2/6, 3/9, 4/14, 5/15

200

7x6

42

200

8x6

48

200

9x6

54

300

reduce the fraction

simplify

300

1/4

2/8, 3/12, 4/16, 5/20

300

7x7

49

300

8x7

56

300

9x7

63

400

whole number and a fraction

mixed number

400

1/5

2/10, 3/15, 4/20, 5/25

400

7x8

56

400

8x8

64

400

9x8

72

500

when the numerator is larger than the denominator

improper fraction

500

3/4

6/8, 9/12, 12/16, 15/20

500

7x9

63

500

8x9

72

500

9x9

81