1-1 Variables & Expressions

1-1 Variables & Expressions

• A variable is a lower case letter used to represent a number that you don’t know. If the side of this square is g feet, what is the distance around the square?

g

g+g+g+g or 4g (that means “4 times g”)

Math Language “4g” is an expression. “sum of…” “difference...” “product…” “x to the power of 4” “ increased by…” “twice…”

+ •  x4 + 2•

5²

Anexponent EXPONENT This is an tells you how many Dat Easy!! 5times x 2 equal to multiply 10 !! Even Trog know A number dat !!! BY ITSELF!!!!!

WRONG (5 • 5) = 25

You Try This One

(3 • 3 • 3) 3³ ==9 = (9 • 3) 3³ = 27

Learn from mistake like Trog!

PRACTICE MAKES PERFECT! CW: Pg. 10 #1-14 HW: Pg. 8 # 12-42 Evens, 48 & 49