Grade 9 Refresher

Which of the following are perfect squares? (Check all that apply)

• 2

• 4

• 80

• 25

• 100

What is the square root of 4?

• 4

• 2

• 16

• 8

• 10

• 32

• 25

• 64

Which of the following are rational numbers? (Select all that apply)

• 3/4

• 2.7

• 1

Answer explanation

Remember that when we add fractions, we need to find a common denominator.

• trinomial

• binomial

• monomial

• I don't remember how to do this