Whole
3/12 + 4/12 =?
7/12
Look at your multiplication chart. What is the first (lowest) common multiple of 3 and 2?
6
4/10
6/6
1
.50
half
8/10 + 1/10 = ?
9/10
Look at your multiplication chart. What is the first (lowest) common multiple of 5 and 6?
30
6/6 OR 1
2
1/4
quarter
100/200 + 15/200 = ?
115/200
Look at your multiplication chart. What is the first (lowest) common multiple of 4 and 5?
20
3/5 + 1/4 = ?
17/20
35/5
7
50%
half
11/15 + 4/15 = ?
15/15 OR 1
Look at your multiplication chart. What is the first (lowest) common multiple of 7 and 9?
63
5/14
88/11
8
.25
quarter
1 and 1/5
Look at your multiplication chart. What is the first (lowest) common multiple of 3 and 8?
24
4/8 + 6/9 = ?
84/72 OR 7/6 OR 1 and 1/6
72/9
8