Unit 2 Test Review

Four students each made a list of prime numbers.

Eric: 5, 7 17, 23

Maya: 3, 5, 13, 17

Bella: 2, 3, 17, 19

Joan: 7, 11, 13, 21

Who made an error and included a composite number?

Which answer choice includes all the factors of 27?

Which is a prime number?

Which list is only composite numbers?

The only factors prime numbers have are:

True or False?

2 + (4 x 5 - 2) + 8 = 28

What would be the second step in this problem?

(3 + 4) 9 + 3

Solve this expression.

24x(4-2)÷6

Solve this expression.

13 - 2 x 4

Solve this expression.

12 - [ 24 ÷ (3 + 1)] - 5

Christina is saving to buy a smart tablet that costs x amount of money. She has $284 in her savings account. Christina plans to work as a babysitter to earn the rest of the money. She charges $8.00 per hour to babysit. The equation below shows how she determined that babysitting for 20 hours would allow her to earn the amount of money she needs to buy her smart tablet.

x = 284 + (8 × 20)

What is x, the cost of the smart tablet?

Ethan collects 18 eggs from his family’s chickens and gives 6 of the eggs to a neighbor. He does this every week for 3 weeks. Which expression matches the words?

Jimmy had 210 marbles. He gave 35 marbles to his brother and put the remaining marbles into 5 bags. Which equation can be used to find m, the number of marbles in each bag?

Use this equation to find h

h= (600 - 128) ÷ 2

Susan buys 3 packages of 8 apples. She uses 15 apples to make applesauce. Which equation shows how to find the number of apples, a, Susan has left?