7th grade Math Unit 3 Post-Test Study Session

Select the correct answer.

The length of the sides of a square is given by the expression 4.8x + 2.4. Which expression represents the perimeter of the square?

• 4.8x + 2.4 + 4

• 19.2x + 2.4

• 8(2.4x + 1.2)

• 4.8x + 9.6

Tags

CCSS.7.EE.A.1

Simplify the expression (NOTE: It will be in form #x + #)

Tags

CCSS.6.EE.A.3

A bakery sells glazed donuts for $1.09 each. Cinnamon bagels and onion bagels are $1.59 each. Max buys x donuts, y cinnamon bagels, and z onion bagels. Which expression represents the total amount Max spent at the bakery?

• 1.09x + 1.59yz

• 1.09x + 1.59y + 1.59z

• 1.09x + 3.18(y + z)

• (1.09 + 1.59)(x + y + z)

Tags

CCSS.HSA-SSE.A.1A

Every morning, Jane runs around a rectangular garden with a length of l and a width of w. If she completes four laps around the garden, which expression best approximates the total distance she ran?

• 4(l + w)

• 8(l + w)

• 4(l)(w)

• 8(l)(w)

Tags

CCSS.HSA.APR.D.7

Blake has b baseball cards. His aunt gave him more cards, increasing his total number of cards by 25%. Which expression represents Blake’s total number of cards now?

• b + 0.25

• b − 0.75b

• 1.25b

• 0.75b

Tags

CCSS.HSA-SSE.A.1A

Which expression matches the scenario below:

the volume of water remaining in a tank after 3/10

of its original volume (x) is drained out

• 7/10x

• x-3/10

• 13/10x

• 1.7x

Tags

CCSS.7.EE.A.2

CCSS.HSA.SSE.A.2

Which expression matches the scenario below:

the price of a game that’s been discounted

18% off its list price (x)

• 0.82x

• 0.18x

• x-0.18

• x+0.82

Tags

CCSS.6.EE.B.6

Bonnie withdrew $1,200 from her savings account. She spent of the money on travel arrangements. She spent of the remaining amount at the hardware store. Finally, she treated her friend to lunch with some of the remaining money. After lunch, Bonnie had $300.50 left. How much money did Bonnie spend on lunch?

Tags

CCSS.7.NS.A.3

A basketball team played 15 games and won 80% of them. If the team expects to play 30 games in all, how many more games must it win to finish the season with a 90% winning percentage?

• 12

• 14

• 15

• 27

The length of each side of a square increases by 2.5 inches to form a new square with a perimeter of 70 inches. The length of each side of the original square was _______ inches

• 14

• 15

• 16

• 17.5

Tags

CCSS.4.MD.A.3