Exponents
Write 3 × 3 × 3 using an exponent.
3³
What is the first step? (5 + 8 ÷ 4 × 3)² − 7
8 ÷ 4
Write “8 more than a number g.”
g + 8
Evaluate 3n when n = 5
15
What is a variable?
A letter that represents a number
Evaluate 5²
25
Write a numerical expression: “Add 12 and 4, then multiply by 3.”
(12 + 4) × 3
Write “twice a number decreased by 5.”
2x − 5
Evaluate 5(n − 2) + 9 when n = 2.3
5.5
What is a coefficient?
The number multiplied by a variable
Which is the same as 2 × 2 × 2 × 2 × 2?
2⁵
Evaluate: 5 × 9 − 12 ÷ 3
45 − 4 = 41
Identify the coefficient in 7y + 4.
7
Evaluate 8n² − 17 when n = 2
15
Match: “the product of 3 and p subtracted from 6.”
6 − 3p
Evaluate 4³ + 2²
72
Evaluate: 42 − 6 × 4(1½)
42 − 6×6 = 6
List all the terms in: 4x + 7y + 12
4x, 7y, 12
Evaluate 6(p − 3) when p = 12
54
True or False: 3 + y + y + y = 3 + y³
True or False: 3 + y + y + y = 3 + y³
True or False: 6⁵ = 6 × 5
False (it’s 6×6×6×6×6)
Create a numerical expression with an exponent and division that equals 8.
Example: 16 ÷ 21
Sheila is y years old. Keith is 4 years older than twice Sheila’s age. Write the expression.
2y + 4
Evaluate 5x − 12 + 7² when x = 9
62
Perimeter formula: 2l + 2w. A picture frame is 20 in by 15 in. What is the perimeter?
70 in