Grade 6 | Unit 7 | Lesson 1: Positive and Negative Numbers | Practice Problems

Is a temperature of -11 degrees warmer or colder than a temperature of -15 degrees?

• Warmer

• Colder

Is an elevation of -10 feet closer or farther from the surface of the ocean than an elevation of -8 feet?

• Closer

• Farther

It was 8 degrees at nightfall. The temperature dropped 10 degrees by midnight. What was the temperature at midnight?

• -2 degrees

• -10 degrees

• 0 degrees

• -18 degrees

A diver is 25 feet below sea level. After he swims up 15 feet toward the surface, what is his elevation?

• -10 feet or 10 feet below sea level

• 10 feet above sea level

• 0 feet (at sea level)

• -15 feet

A whale is at the surface of the ocean to breathe. What is the whale’s elevation?

• 0 feet

• 300 feet

• -300 feet

The whale swims down 300 feet to feed. What is the whale’s elevation now?

• 0 feet

• 300 feet

• -300 feet

The whale swims down 150 more feet more. What is the whale’s elevation now?

• -150 feet

• -450 feet

• -300 feet

Plot each of the three elevations as a point on a vertical number line. Label each point with its numeric value.

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