7 chap. 5

gcf/lcm

100

gcf of 24 and 18

6

200

lcm of 6 and 10

30

300

gcf of 96 and 36

12

400

lcm of 4, 6, 3 and 9

36

500

gcf of 42, 75 and 90

3

+ fractions

100

7/8 + 11/12

1 19/24

200

-1/8 + -9/10

-1 1/40

300

18 1/2 + 7 3/8

25 7/8

400

5 1/9 + 6 1/18

11 1/6

500

34 5/6 + (-10 2/9)

24 11/18

- fractions

100

2/3 - 1/7

11/21

200

-7/12 - (-7/36)

-7/18

300

26 1/4 - (-5 3/8)

31 5/8

400

3 8/15 - 9 2/5

-5 13/15

500

13 - 3 1/4

9 3/4

x fractions

100

2/3 x 3/5

2/5

200

-5/2 x -2/5

1

300

8(-1 1/5)

-9 3/5

400

-1/4(-5 1/7)

1 2/7

500

6 2/3(-1 1/4)

-8 1/3

÷ fractions

100

3/5 ÷ 6/25

2 1/2

200

3/8 ÷ -5

-3/40

300

5 1/2 ÷ -5/8

-8 4/5

400

-2 5/8 ÷ 3/16

-14

500

8 3/4 ÷ -3 1/2

-2 1/2