NS.1b

Which number line models the sum of 5 + (-7) correctly?

• A

• B

• C

• D

Which number line models the sum of 0.5 + (-2) correctly?

• A

• B

• C

• D

Which number line models the sum of 25 + (-50) correctly?

• A

• B

• C

• D

Which number line models the sum of 1.5 + (−2.5) correctly?

• A

• B

• C

• D

Consider the number line. Which scenario describes the number line correctly?

• A. A hiker starts a trail and travels 8 miles north, then travels 4 miles north.

• B. A hiker starts a trail and travels 8 miles south, then travels 8 miles north.

• C. A student starts at home and walks 4 blocks east, then walks 4 blocks west.

• D. A student starts at home and walks 4 blocks east, then walks 8 blocks west.

Which number line models the sum of 1 + (-2) correctly?

• A

• B

• C

• D

Consider the number line. Which situation describes the number line correctly?

• A. A swimmer climbs 8 feet to the top of a high dive and then dives down 28 feet.

• B. A swimmer climbs 20 feet to the top of a high dive and then dives down 28 feet.

• C. A swimmer practices backstroke for 20 laps in the pool and then practices freestyle for 8 laps.

• D. A swimmer practices backstroke for 28 laps in the pool and then practices freestyle for 20 laps.

Which equation and number line show that a number and its opposite are additive inverses?

• A

• B

• C

• D

Which number line models the sum of 8 + (-12) correctly?

• A

• B

• C

• D

Which number line models the sum of 4 + (-3) correctly?

• A

• B

• C

• D