Units Resulting From Rate Calculations

Focus On the Units

Work Time

Focus On the Units

Watch the video. Then read the problem below.

Emma has been running laps around the track. (A lap is a quarter mile.) Her coach recorded how many minutes she ran. After Emma’s run, her coach wrote these calculations on his clipboard:

30 ÷ 15 = 2 and 15 ÷ 30 = 0.5

The coach forgot to include the units with his calculations.

  • Determine what the numbers mean. Explain your thinking.

VIDEO: Emma Running

Hint:

  • What two units were mentioned in the video?
  • What is the relationship between those units?
  • Which of those units goes with the larger number (30)?
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