Test Prep Unit 1

Bryson is playing a game. Early in the game he had -225 points. Now Bryson has 270 points. What was the change in Bryson's score?

Mathematical Equivalence

ON

Tags

NC.7.NS.1

Which two numbers have a negative sum?

Tags

NC.7.NS.1

Andrew deposited two checks in his savings account last week. The first check increased the value of his account by $325, and the second check increased his account by $48. He also wrote a check that decreased her account by $158. By how many dollars did Andrew’s account value change in total last week?

Mathematical Equivalence

ON

Tags

NC.7.NS.1

• 2.583

• 9.916

Tags

NC.7.NS.1

Tags

NC.7.NS.1

Rowan invested a total of $8,000 in two different accounts. He invested part of it in Account A, which pays 8% simple interest every year, and the remaining in Account B, which pays 6% simple interest every year. If Rowan invested x dollars in Account A, what does (8,000-x)(0.06) represent?

• the amount of money in Account A in one year

• the amount of money in Account B in one year

• the amount of interest earned from Account A in one year

• the amount of interest earned from Account B in one year

Answer explanation

x is the money put into account A so

8000 - x = the money put in account B.

(0.06) is the interest payment on account B.

Tags

NC.7.NS.2

Alberto and Abubakar work for a gaming platform. On average, Alberto can play x levels of a game in one day and Abubakar can play y levels of a game in one day. They both work the same number of days, t. What does the expression (x+y)t represent?

• the number of game levels Alberto can play in t days

• the number of game levels Abubakar can play in t days

• the number of game levels Alberto and Abubakar can play in t days

• the number of game levels Alberto and Abubakar can play in one day

Answer explanation

Alberto is x

Abubacar is y

so x + y is the total for the 2 boys

t is the number of days.

The formula lets you put in however many days you want the boys to "work".

Tags

NC.7.NS.2

Tags

CCSS.7.NS.A.2

CCSS.7.NS.A.3

Which statement is true about the expression 3(5 - 3x)?

• As the value of x increases by 1, the value of the expression decreases by 3.

• As the value of x increases by 1, the value of the expression decreases by 6.

• As the value of x increases by 1, the value of the expression decreases by 9.

• As the value of x increases by 1, the value of the expression decreases by 12.

Tags

NC.7.NS.2

Jamier wants to paint the walls of his tree fort. The 4 walls have the following dimensions (in feet): 8x10, 12x14, 8x5, and 12x7. Each gallon of paint costs $23.50 (sales tax included) and covers 200 square feet. Paint is sold only in 1-gallon cans. What is the least amount that Jamier can spend and cover all 4 walls?

Mathematical Equivalence

ON

Tags

NC.7.NS.2b