Unit 1 Pretest

Look at the following expression. 

5 × (2 + 2) - 8

Complete the following sentence to make a true statement about the parentheses in this expression.

 

The parentheses indicate that…

• 2 + 2 should be solved last

• 2 + 2 should be solved first

• It doesn't matter which expression gets solved first

• We should pay attention to 2 + 2 because it is important

Simplify the following expression using the order of operations.

 

 

12 - 3 x 2 + 1

Which of the following are prime numbers?  Select all the correct answers.

• 0

• 71

• 37

• 4

• 9

Which of the following statements about prime numbers is true?

• Prime numbers are numbers that have more than 2 factors

• Prime numbers are the same as even numbers

• Prime numbers only have 2 factors

• Prime numbers are the as as odd numbers

In the following expression, what operation should you do first?

4 × [ (3 + 9 ) ÷ 3 ]

• Multiply

• Divide

• Add

• Subtract

Simplify the following expression using the order of operations.

7 ( 36 ÷ 4 − 3 )