Adding & Subtracting fractions w/ Unlike Denominators

Adding

100

7/6+2/6

9/6

200

2/5+2/7

24/35

300

2/5+2/3

16/15

400

3/40+2/5

11/40

500

3/4+6/10

27/20

Subtracting

100

2/5-1/7

9/35

200

2/5-2/7

4/35

300

2/3-1/4

5/12

400

3/4-9/15

3/20

500

3/4-3/5

3/20

Multiplies

100

5

5,10,15,20

200

6

6, 12, 18, 24,

300

8

8, 16, 24, 32

400

9

9, 18, 27, 36

500

10

10,20,30,40,50