7th Grade Math Review

Integers

100

-5 + -3

-8

200

12 + -7

5

300

18 - -3

21

400

-12 x -4

48

500

8 x -3 + -5

-29

Rational Numbers

100

What is 9/10 as a decimal? 

0.9

200

What is 3/25 as a decimal? 

0.12

300

What is 0.4 as a decimal IN SIMPLEST TERMS? 

2/5 

400

Add the fractions: 

2/3 + 1/6 

5/6 

500

Multiply the fractions and simplify:

4/15 x 3/4 

1/5 

Expressions

100

A letter used to replace an unknown number is called a ______. 

variable

200

Solve if a=4 and b= 12 and c=3

b - a + c

11

300

Identify the arithmetic sequence and find the next 3 terms. 

87, 94, 101, ...

+7 

108, 115, 122

400

Solve if a= -4 and b=9

3a + 9 

-3

500

Simplify by combining like terms: 

3x - 2 + 9x + 7y - 4y

12x + 3y -2

One Step Equations

100

Solve for x 

x + 3 = 7

x = 4

200

Solve for b. 

2b = 18

b = 9

300

Solve for x. 

-3x = -9

x = 3

400

x - 9 = -12

-3

500

b/5 = -20

-100