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Negative number addition and subtraction: word problems

Three baby penguins and their father were sitting on an iceberg 12\dfrac1{2} of a meter above the surface of the water. The father dove down 4.74.7 meters from the iceberg into the water to catch dinner for his kids.
What is the father penguin's position relative to the surface of the water?
  • Your answer should be
  • an integer, like 66
  • a simplified proper fraction, like 3/53/5
  • a simplified improper fraction, like 7/47/4
  • a mixed number, like 1 3/41\ 3/4
  • an exact decimal, like 0.750.75
  • a multiple of pi, like 12 pi12\ \text{pi} or 2/3 pi2/3\ \text{pi}
meters