7th Grade Unit 1 CFA

What is a zero pair? 

• Two negatives
• Two positives
• One negative, one positive

Tags

7.NS.A.1.c

-10 + 10

• 20
• 0
• -20
• 1,000,000

Tags

7.NS.A.1.c

At the beginning of the month, Sarah had $50 in her account at the school cafeteria. Represent each transaction on a number line.

First she bought lunch that cost $15.

Then she deposited some more money and her account balance was $60.

Then she bought snacks for $25.

Then she deposited exactly enough money so that she paid off her debt to the cafeteria.

How much money did she deposit in the last step? Explain why it makes sense to use a negative number to represent Sarah's account balance when she owes money.

• 15

• 20

• 30

• 25

Tags

7.NS.A.2.f

What is the multiplicative inverse of 2/3?

• -2/3
• 3/2
• -3/2
• 2/3

Tags

7.NS.A.2.b

What could I multiply by 3/4 to get 1 whole?

Tags

7.NS.A.2.b

A recipe calls for 213cups of flour. Jane needs to make only half of the recipe. Whichexpression could Jane use to calculate the number of cups of flour she needs?A.213 �12B.213 �12C.213•12D.213÷124.

• 2 1/3 + 1/2

• 2 1/3 - 1/2

• 2 1/3 ᐧ 1/2

• 2 1/3 ÷ 1/2

Tags

7.NS.A.2.f

At the beginning of the week, the temperature was 14 degrees Fahrenheit. During the week, it decreased by 25 degrees Fahrenheit. What was the temperature by the end of the week?

• 39 degrees F
• 11 degrees F
• -11 degrees F
• -39 degrees F

Tags

7.NS.A.3

Match the expressions with the answers.

• -3.7

• -2 1/4 - 3

• -5 1/2

• -1.6 - 2.1

• -5 1/4

• -1.24 + 4.25

• 3.01

• -2 1/4 + (-3 1/4)

Tags

7.NS.A.1.a

Which expression is modeled by the number line shown?

• A

• B

• C

• D

Tags

7.NS.A.1.b

Select all the expressions that are modeled by the given number line.

• -2 + 4

• -2 - 4

• -2 - (-4)

• -4 + 2

• -4 - (-2)

Tags

7.NS.A.1.d