Adding, Subtracting and Multiplying Fractions

Adding Fractions

100

1/5 + 2/25

7/25

200

1/3 + 3/7

13/21

300

1/25 + 14/50

32/100 or 16/50 or 8/25

400

7/13 + 1/2

27/26

500

4/27 + 7/9

25/27

Subtracting Fractions

100

7/10 - 1/8

46/80 or 23/40

200

6/20 - 1/5

1/10

300

5/8 - 1/32

19/32

400

12/50 - 1/200

47/200

500

13/20 - 1/6

68/120 or 34/60 or 17/30

Multiplying Fractions EASY

100

1/2 x 2/5

2/10

200

1/3 x 4/5

4/15

300

9/9 x 1/10

9/90

400

1/10 x 3/5

3/50

500

3/4 x 5/8

15/32

Multiplying Fractions HARD

100

19/20 x 1/15

19/300

200

1/25 x 3/30

3/750

300

13/32 x 20/24

260/768 or 130/384 or 65/192

400

12/99 x 11/7

132/693

500

21/75 x 4/9

84/675

Junk Drawer

100

10+(-7)+|-19|

22

200

7(372)

2604

300

13/30 - (- 4/15)

21/30

400

Find the lowest common denominator for 60/84 and 18/63

7 - 18/63 = 2/7 while 60/84 = 5/7

500

1-2/10+4/5+(-16/20)+1/100

1/100