7 chap. 5

+ fractions

100

-5/16 + (-5/8)

-15/16

200

3/5 + (-4/15)

1/3

300

1 3/5 + (-6 7/10)

-5 1/10

400

1 3/10 + 2/5

1 7/10

500

-2 7/12 + (-3 5/8)

-6 5/24

- fractions

100

7/10 - 4/5

-1/10

200

-2/10 - 11/20

-3/4

300

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

31 5/8

400

-3 5/6 - (-1 3/4)

-2 1/12

500

3 8/15 - 9 2/5

-5 13/15

x fractions

100

-3/8(-2/8)

3/32

200

24(3/8)

9

300

-1 3/4(-1 2/3)

2 11/12

400

4 3/5(4 1/2)

20 7/10

500

3 1/2(-1 1/2)

-5 1/4

÷ fractions

100

-3/8 ÷ -3/4

1/2

200

-4/5 ÷ 1/2

-1 3/5

300

2 7/8 ÷ 1/2

5 3/4

400

7 2/3 ÷ 3

2 5/9

500

2 2/5 ÷ 3 3/5

2/3