Addition & Subtraction Equations

Inverses

100

What is the inverse of addition?

Subtraction

200

What is the inverse of subtraction?

Addition

300

What is the inverse of multiplication?

Division

400

What is the inverse of division?

Multiplication

500

True or false, equal signs have inverses?

False

Addition Equations

100

Solve.

x + 3 = 6

x = 3

200

Solve.

x + 4 = 14

x = 10

300

Solve.

27 = 9 + b

18 = b

400

Solve.

37 = 18 + a 

19 = a

500

Solve.

100 = f + 25

75 = f

Subtraction Equations

100

Solve

c - 4 = 7

c = 11

200

Solve.

x - 12 = 32

x = 44

300

Solve.

g - 11 = 59

g = 70

400

Solve.

62 = y - 19

81 = y

500

Solve.

x - 18 = 234

x = 252 

Challenge

100

Solve: 

3x= 18

6

200

4x= 32

8

300

x/2=9 

18

400

Solve: 

3n= 12

4

500

Solve: 

x/3 = 5

15