OpenUp 6th Math 7.1 practice problems and vocab

a number that is less than zero. On a horizontal number line, they are usually shown to the left of 0.

• positive number

• negative number

a number that is greater than zero. On a horizontal number line, they are usually shown to the right of 0.

• negative numbers

• positive numbers

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?

• farther

• closer

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

• -4

• 2

• 0

• -2

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

• -10 feet

• 10 feet below sea level

• 10 feet

• 10 feet above sea level

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

• 0

• -0

• 1

• -1

The whale that was at the surface swims down 300 feet to feed. What is the whale’s elevation now? (select two answers)

• -300 feet

• 300 feet below sea level

• 300 feet

• 300 feet above sea level

A whale that was 300 feet below the surface swims down 150 more feet more. What is the whale’s elevation now? (select 2 answers)

• -450 feet

• 450 feet below sea level

• 450 feet

• 450 feet above sea level

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

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

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

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