7th grade Ch 3 review

Conversions

100

Turn 0.04 into a fraction 

4/100

200

Turn (6/10) into a decimal 

0.6

300

Turn 4.2 into a fraction 

42/10 

400

turn 2/5 into a decimal 

0.4

500

turn 4.35 into a mixed number 

4 35/100

Multiply

100

3.25 * 24

78

200

5/14 * 7/10

1/4

300

3.4*9.6

32.64

400

2 1/8 * 14 5/6

1513/8

500

7/12 * 3/4

7/16

Divide

100

3.78 / 4.2 

0.9

200

78.74 / 12.7 

6.2

300

-3/8 / 3/4 

- 1/2

400

1/3 / 3/5 

5/9

500

2 1/4 / 1 3/4

1 2/7

Add/Subtract

100

12.54 + 21.08 

33.62

200

28.94 - 9.48

19.46

300

5/6 + 3/4 

19/12 or 1 7/12

400

9/14 - 1/7 

1/2

500

2 11/12 + 3 7/8

6 19/24

Equations

100

n- 1.75 = -19

n = -17.25

200

3.4 + n = 8 

n=4.6

300

-3.5 = -5x

x= 0.7

400

4/5R=8/9

R = 1 1/9

500

w + 4/15 = 3 1/3 

w = 3 1/15