Expressions & Equations

Vocabulary

100

The letter in an expression is called a ...

variable

200

Name all four operations AND their inverses.

Addition : Subtraction

Subtraction : Addition

Multiplication : Division

Division : Multiplication

300

What is the main difference between an expression and an equation?

An equation has an equal sign.

400

What two things must terms have in common in order to be "like terms"?

Same variable and exponent

500

Write an expression and label the four major parts.

Coefficient, variable, term, constant

Addition/SubtractionEquations

100

x + 8 = 24

16

200

x - 49 = 23

72

300

3.2 = 1.7 + x

1.5

400

81.2 = x - 49.1

130.3

500

g + 49.65 = 109.78

60.13

Multiplication/DivisionEquations

100

3x = 42

14

200

x / 8 = 7

56

300

256 = 16x

16

400

23.78 = x / 12

285.36

500

39.26k = 314.08

8

Combine Like Terms

100

2a + 8a - 45

10a - 45

200

67z + 9 + 7z + z

75z + 9

300

10f + 19g + 5.8f

15.8f + 19g

400

29.45k + 10m + 2.4k - 3m

31.85k + 7m

500

83.5 + 12.9j - 29 + 3j + j

54.5 + 16.9j

Distributive Property

100

9(x + 2)

9x + 18

200

3(12 - 10)

36 - 30 = 6

300

7(4k - 8g)

28k - 56g

400

13(3.8p + 7.2p)

143p

500

5.8(3n - 2.9)

17.4n - 16.82