Solving Variable Equations

One Step

100

x + 4 = 25

x = 21

200

a + 10 = 10

a = 0

300

n + (8) = 14

n = 6

400

x + 36 = 100

x = 64

500

27 = 2c + 9

c = 9

Two Step

100

2x - 2 = 6

x = 4

200

4d - 7 = 9

d = 4

300

2k + 83 =121

k = 19

400

4x - 327 = 665

x = 248

500

(a/4) + 11 = 17

a = 24

Solving equations

100

9x = 27

x = 3

200

7x = 63

x = 9

300

5e + 200 = 400

e = 40

400

5(11x)= 275

x = 5

500

21y = 440 + 316

y = 36

Solving equations

100

y/6 = 2

y = 12

200

x/4 = 14

x = 56

300

3x/6 = 6

x = 12

400

28 = a/13

What is 364

500

18x/12 = 6

x = 4

Vocabulary

100

a number sentence with digits, operations, AND an equal sign

equation

200

a number sentence with digits and operations (NO equal sign)

expression

300

a letter that represents an unknown number or number whose value changes

variable

400

math computation that UNDOES each other (example: multiplication and division; addition and subtraction)

inverse operations

500

a number whose only factors are 1 and itself

prime