Explore Real-World Applications of Integers

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6

Front

Trevor spent $27 and now has no money left. How much money did he have before his purchase?

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$27

Front

A scuba diver rose 600 feet to the surface of the water. The integer that represents the diver’s position, in feet, with respect to the water’s surface before rising is

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-600

Front

A diver is 19 meters below the surface of the water. Use an integer to represent how far the diver will need to travel to reach the surface.

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19

Front

An elevator goes up 7 floors and then down 4 floors. What integer represents the overall change in the floor level from where it started?

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3

Front

Who is farther away from sea level: Sean at 91 feet below or Liz at 91 feet above?

Back

Neither; they are the same distance away from sea level.

Front

Situation represented by the opposite of -7:

• You take an elevator down 7 floors.
• You take an elevator up 7 floors.
• The temperature drops 7°C.
• A stock decreases 7 points.

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You take an elevator up 7 floors.

Front

A submarine is underwater. Its position is 645 feet below sea level. It rises in the water 100 feet and then descends 100 feet. What integer represents the change in the submarine’s position in the water?

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0