Equations & Expressions

Vocab

100

An unknown part of an equation, or expression, represented by a letter.

Variable

200

Two expressions that are set equal to each other creates a what?

Equation

300

The number attached to a variable through multiplication or division

Coefficient

400

A number in an expression that is attached with adding or subtracting

Constant

500

A group of variables and numbers, separated by addition or subtraction signs

A Term

Writing Expression

100

Sally has 7 blue marbles and r red marbles. How many marbles does Sally have?

7+r

200

9 less than y

y - 9

300

The quantity of 9 increased by c, times 4

4(9+c)

400

Write the words for the following expression:
n²+8

N squared plus 8

500

Five times the difference of 4 and t

5(4-t)

Equations from Word Problems

100

Jordan scored a total of 35 points in a two game tournament. He scored 17 points in the first game. How many points did he score in the second?

x + 17 = 35

200

Jayce and Chelsea sold 105 muffins at the bake sale. Jayce sold 65 muffins. How many did Jayce sell?

65 + m = 105

300

Greg biked to work each day this week. He biked a total of 40 miles. How many miles did he bike each day?

5x=40

400

Michael and his three friends split a bill. Each person paid $12. How much was the total bill?

x/4=12

500

Each person in Mrs. Wood's class earned $15 towards a field trip. Mrs. Wood added $30 to the pot of money. The whole group raised $300. How many students are in the class?

15x + 30 = 300

Solving Equations

100

x + 6 = 12

x = 6

200

y - 13 = 9

y = 22

300

3n = 30

n = 10

400

m/7 = 42

m = 294

500

3p-7= 14

p = 7

Order of Operations

100

7 + 6 - 4

9

200

13 - 8 + 2

7

300

15 + 4(2) -8

15

400

5(7+3) + (8-3)

55

500

8² + 9(7) - 8 + 3

122