Whole, half, or quarter?
Like addition
Multiples
Unlike addition
Mixed Numbers
100
1.00

Whole

100

3/12 + 4/12 =?

7/12

100

Look at your multiplication chart. What is the first (lowest) common multiple of 3 and 2?

6

100
1/5 + 2/10 = ?

4/10

100

6/6

1

200

.50

half

200

8/10 + 1/10 = ?

9/10

200

Look at your multiplication chart. What is the first (lowest) common multiple of 5 and 6?

30

200
4/6 + 1/3 = ?

6/6 OR 1

200
20/10

2

300

1/4

quarter

300

100/200 + 15/200 = ?

115/200

300

Look at your multiplication chart. What is the first (lowest) common multiple of 4 and 5? 

20

300

3/5 + 1/4 = ?

17/20

300

35/5

7

400

50%

half

400

11/15 + 4/15 = ?

15/15 OR 1

400

Look at your multiplication chart. What is the first (lowest) common multiple of 7 and 9? 

63

400
1/7 + 3/14 = ?

5/14

400

88/11

8

500

.25

quarter

500
4/5 + 2/5 = ?

1 and 1/5

500

Look at your multiplication chart. What is the first (lowest) common multiple of 3 and 8?

24

500

4/8 + 6/9 = ?

84/72 OR 7/6 OR 1 and 1/6

500

72/9

8