G8

Copyright © Swun Math Grade 8 Cumulative Glossary TE

Term Definition Example Unit

elimination

method

(multiplication)

uses multiplication to create

terms that are opposites; then

equations are added to

eliminate one variable and

the other variable can be

found

8

equation a number sentence that

shows equal values on both

sides of an equal sign

12 + 2 = 20 — 6 4

exponent indicates the number of times

the base is multiplied by

itself; also known as power

5 ³; 3 is the exponent

5 · 5 · 5 = 125

“5 to the power of 3”

2

exponential

form

expressions written with

exponents

23

instead of 2 · 2 · 2 or 8

2

expression a number phrase that

represents a value with no

equal sign

9 + 4 4

exterior angle the angle between any side of a

shape, and a line extended

from the next side

10

factors numbers that are multiplied

to create a product

5 • 3 = 15^

5 and 3 are the factors

2

frequency the number of times a result

occurs

12

Grade 8 • Glossary