Lesson Worksheet: Adding and Subtracting Units of Time Mathematics • 5th Grade

In this worksheet, we will practice how to measure time in hours, minutes, and seconds by using addition and subtraction and use this skill to solve word problems.

Q1:

Determine the difference between 10 hours, 29 minutes, and 8 seconds and 6 hours, 20 minutes, and 30 seconds.

  • A4 hours, 29 minutes, and 8 seconds
  • B4 hours, 8 minutes, and 38 seconds
  • C4 hours
  • D4 hours, 20 minutes, and 30 seconds
  • E16 hours

Q2:

The given table shows the time Anthony spends on his morning activities. Calculate the total time it takes Anthony to get ready and arrive at work.

ActivityGetting Ready in the MorningWalking to the Bus StopRiding the Bus to WorkWalking from the Bus Stop to Work
Time32 minutes28 minutes55 minutes9 minutes
  • A3 hours
  • B2 hours
  • C2 hours and 9 minutes
  • D2 hours and 4 minutes
  • E2 hours and 55 minutes

Q3:

Express, in hours, minutes, and seconds, the finishing time of a marathon winner who completed the race in 8,569 seconds.

  • A72hmin and 49 s
  • B245hmin and 19 s
  • C222hmin and 49 s
  • D445hmin and 19 s
  • E422hmin and 26 s

Q4:

Add 11 hours and 34 minutes to 3 hours and 43 minutes.

  • A15 hours and 43 minutes
  • B15 hours and 17 minutes
  • C15 hours
  • D14 hours
  • E15 hours and 34 minutes

Q5:

Add 7 hours, 45 minutes, and 15 seconds to 2 hours, 10 minutes, and 33 seconds.

  • A9 hours, 55 minutes, and 48 seconds
  • B9 hours
  • C9 hours, 45 minutes, and 15 seconds
  • D8 hours
  • E9 hours, 10 minutes, and 33 seconds

Q6:

Fill in the missing value: There are seconds in 23  days.

Q7:

How many minutes are there in 76 and a half hours?

Q8:

How many seconds are there in 3 hours, 34 minutes, and 10 seconds?

Q9:

Fill in the missing value: 114 hours + 25 minutes = seconds.

Q10:

Fill in the missing value: 12+13+14=hourhourhour minutes.

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