Time practice

Complete an elapsed-time table

Find a missing start time, end time or elapsed duration by using the other two entries in a row.

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Read the column labels and identify the blank in each row. Use the two given entries to find the missing value, keeping clock times and durations in their correct columns.

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Learning objective

What this activity builds

Choose addition, subtraction or interval counting according to which part of a time relationship is missing.

Worked example

A row gives a start of 2:45 PM and a duration of 50 minutes. What is the end time that afternoon?

3:35 PM.

Use 15 of the 50 minutes to reach 3:00 PM. The remaining 35 minutes give an end time of 3:35 PM. The answer is a clock time because the end column is missing, not another duration.

Teaching notes

Make the practice count

  • Say the relationship aloud: start plus duration gives end.
  • For a missing start, work backward from the end; for a missing duration, count forward between the two times.
  • After completing a row, read all three entries together and verify that they describe one consistent interval.

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Customize the practice

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Worksheet settings

Sets the spacing of starting times only. Duration minutes and ending times do not have to follow this step.

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Configured PDF · Elapsed Time Table · US Letter

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Math SheetNameScore/ 10TeacherDateElapsed Time TableComplete the missing start, end or duration in each row. AM/PM rows may cross noon or midnight. Every interval is positive andat most 5 hours. An ending time may be on the next day after midnight.StartEndDuration6:00 PM2 hours3:20 AM2 hours 16 minutes4:00 PM5:53 PM4:20 AM2 hours8:20 PM50 minutes10:00 AM11:48 AM2:20 AM5 hours1:20 AM5 minutes8:00 PM8:59 PM3:20 AM4 hoursmath-sheet.comPage 1 / 1

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