6/7 Math Review

Algebra +/-

100

Find x

5 + 6 = x

x = 11

200

Find x

x + 14 = 25

x = 11

300

find x

53 - x = 25

x = 28

400

find x

x - 59 = 12

x = 73

500

find x

3 + (x - 5) = 30

x = 32

Algebra x/÷

100

find k

3 x 7 = k

k = 21

200

find k

132 ÷ 12 = k

k = 11

300

find k

k x 5 = 30

k = 6

400

find k

1000 ÷ k = 25

k = 40

500

find k

k x 15 = 60

k = 4

decimals +/-/x/÷

100

0.12 + 0.34 =

0.46

200

0.03 - 0.01 =

0.02

300

0.3 - 0.18 =

0.12

400

4 x 0.25 =

1

500

0.625 ÷ 5 =

0.125

Integers +/-

100

-3 + 3 =

0

200

-7 + 10 = 

3

300

-12 - 3 =

-15

400

-25 + 18 =

-7

500

-355 - 45 =

-400

True/False

100

True or False? |-7| = |7|

True

200

True or False? 

2(6 + 3)=15

False. Correct answer is 18

300

True or False? 

0.3 + 0.05 = 0.8

False. Correct answer is 0.35

400

True or False? Addition and multiplication are always commutative and associative.

True.

500

True or false? x = 15

x - 3 = 18

False. Correct answer is 21