Lesson 7 Practice Quiz B

The number line models an addition equation. Complete the equation.

(-5) + ___

The number line models an addition equation. Complete the equation.

(-5) + ? = ___

Determine whether the expressions are equal:

(-7) + (-7) and 7 + 7

• Yes

• No

Determine whether the expressions are equal:

21 + (-8) and (-8) + 21

• Yes

• No

Determine whether the expressions are equal:

-13 + 13 and (-9) + 9

• Yes

• No

Determine whether the expressions are equal:

2 + (-10) and (-3) + (-5)

• Yes

• No

Determine whether the expressions are equal:

9 + (-5) and (-9) + 5

• Yes

• No

Marco looked at his thermometer three times on Tuesday.

At 6:00 AM, the temperature was 0⁰ C

At 1:00 PM, the temperature had increased 9⁰ C

At 11:00 PM, the temperature had decreased 9⁰ C

The temperature on Marco's thermometer at 11:00 PM on Tuesday was ___⁰ C

Anna find that the sum of the expression -9 + 12 is 3. Based on her answer, Anna states that the sum of a negative number and a positive number is always positive.

Anna's statement is __________.

• True

• False

The sum of the expression -11 + 7 is ___.

• -18

• -4

• 4

• 18