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- 1. Multiple Choice
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
- 2. Multiple Choice
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
- 3. Multiple Choice
Is a temperature of -11 degrees warmer or colder than a temperature of -15 degrees?
warmer
colder
- 4. Multiple Choice
Is an elevation of -10 feet closer or farther from the surface of the ocean than an elevation of -8 feet?
farther
closer
- 5. Multiple Choice
It was 8 degrees at nightfall. The temperature dropped 10 degrees by midnight. What was the temperature at midnight?
-4
2
0
-2
- 6. Multiple Choice
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
- 7. Multiple Choice
A whale is at the surface of the ocean to breathe. What is the whale’s elevation?
0
-0
1
-1
- 8. Multiple Choice
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
- 9. Multiple Choice
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
- 10. Draw
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.
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