Show:
multiplying rational numbers decimal
add & subtract rational numbers
rewriting subtracting problems
changing a fraction to a decimal
multiplying & dividing rational numbers
100

4/5 x -4/5

-16/25

100

-5+6

1

100

5-(-9)

14

100

5/11

.45 repeating 

100

 8 x-5

-40

200

1/2 x 7/8 

7/16

200

12+-16

-4

200

-10-3

-13

200

7/8

.875

200

16 x 4

64

300

-2/3 x4/5

-8/15

300

-17+-23

-40

300

67-24

43

300

3/4

.75

300

-5 x -25

125

400

-7/9 x -2/6

7/27

400

-4+21

17

400

-23-10

-33

400

4/5

.8

400

13 x - 5

-65

500

5/8 x -8/10

-1/2

500

15+-50

-35

500

13-13

0

500

6/9

.6 repeating 

500

7 x -14

-98