Operations with Rational Numbers

Nancy spent $44.59 on 5.25 quarts of olive oil. What is the cost of one quart of olive oil? Round to the nearest cent.

• $8.38 per quart

• $8.49 per quart

• $8.57 per quart

• $8.92 per quart

Tags

CCSS.6.NS.B.3

Yuuma applied the steps below to find the product of (–10.2)(–16.4).

Step 1: (–10.2)(–16.4) = (–16.4)(–10.2)

Step 2: = (–16.4)(–10) + (–16.4)(–0.2)

Step 3: = ____________

Step 4: = 167.28

Which expression correctly fills in the blank in Step 3?

• (–164) + (–3.28)

• 164 – 3.28

• (–164) + 3.28

• 164 + 3.28

Tags

CCSS.7.NS.A.1D

The price of a gallon of gasoline dropped by $0.08 on Wednesday and by 0.25 of that amount on Thursday. Which best represents how the price of a gallon of gasoline changed on Thursday?

• –0.32

• –0.02

• 0.02

• 0.32

Tags

CCSS.7.NS.A.3

What is the difference of –96.43 – (–98.67)?

• –195.1

• –2.24

• 2.24

• 195.1

Tags

CCSS.7.NS.A.1C

In the world’s coldest freezer, sodium gas was cooled to a temperature of 78.5°C below zero and then cooled 194.65°C more. What was the new temperature of the sodium gas?

• –273.15°C

• –272.7°C

• –202.5°C

• –116.15°C

Tags

CCSS.7.NS.A.1C

A student has $78 in his checking account. If the student spends $12 on lunch, which number could be combined with the amount left in the account to make zero?

• –90

• –78

• –66

• –12

Tags

CCSS.7.NS.A.1B

What is the simplified value of the expression below?

-8 * (-3)

• -24

• -11

• 11

• 24

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the simplified value of the expression below?

-2.6 + 5.8

• -8.4

• -3.2

• 3.2

• 8.4

Tags

CCSS.7.NS.A.1C

What is the simplified value of the expression below?

12.4 x (-6.3)

• -78.12

• -1.97

• 1.97

• 78.12

Tags

CCSS.7.NS.A.2A

What is thNoa buys 6 items that each cost $4.25 and 3 items that each cost $6.75. How much does Noa spend in total?

• $20.25

• $25.50

• $38.25

• $45.75

Tags

CCSS.7.EE.B.3