Show:
LEAST COMMON MULTIPLE
ADDITION
IMPROPER FRACTIONS
SUBTRACTING
100

The least common multiple of 12 and 4.

12

100

2/5 + 1/2 = 

9/10

100

Simplify 13/3.

4 1/3

100

2/3 - 1/5 =

7/15

200

The least common multiple of 4 and 5.

20

200

1/3 + 1/6 =

3/6 or 1/2

200

Simplify 22/15

1 7/15

200

2/5 - 1/10 =

3/10

300

The least common multiple of 6 and 7.

42
300

6/10 + 3/4=

27/20 or 1 7/20

300

Simplify 33/14

2 5/14

300

8/9 - 1/2 =

7/16

400
The least common multiple of 10 and 7.

70

400

1/3 + 11/12 =

15/12 or 1 3/12 or 1 1/4

400

Simplify 15/4

1 3/4

400

6/9 - 1/3 =

3/9 or 1/3

500

The least common multiple of 8 and 3.

24

500

3/5 + 1/9 =

32/45

500

Simplify 29/17

1 12/17

500

11/12 -1/3

7/12