Unit 1 Review: Operations with Rational Numbers

Select all of the zero pairs.

• -28 + -28

• -36 + 36

• 18 - (-18)

• 52 - 52

Find the sum: -2.6 + (-1.9)

• 4.5

• -4.5

• 0.7

• -0.7

Write the equation represented by the number line model

• -4 + 7 = 3

• 3 + -4 = 7

• 0 - 4 = -4

• 3 + 0 = 4

Multiply.

• -7  1/5
• -4/45
• -8
• 7

Mr. Smith has an account balance of -$275.78. He deposits $139.20 into his account. What is Mr. Smith's account balance now?

• $-414.98

• $-136.58

• $136.58

• $414.98

Ella played a math game and had five cards shown. Her score was the sum of the numbers on these five cards. What was Ella's score?

• 3

• 23

• -5

• 10

• -3 + 9

• -3 - (-7)

• -3 - (-4)

• -3 + 0

The temperature at 9 AM was 5°F. The temperature dropped 4 degrees per hour for the next three hours. What is the temperature at noon?

• -12°F

• -7°F

• 12°F

• 7°F

Reduce 120/200

• 3/5

• 4/5

• 6/10

• 4/15

Reduce to the lowest terms.

• 2 ½

• ½

• 2 ⅜

• ⅖