Time

Develop secure understanding of time and time calculations.

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Te reo Māori terms

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Learning objective overview

Master Teaching Guide coverage for this objective.

Resources

  • Alpha textbook: Mixed Questions in Ex 19.01, pgs 294 – 297
  • Alpha textbook: Check Your Understanding on pgs 312 & 313
  • CorbettMaths worksheetQuestions PDF · Answers
  • CorbettMaths Time Calculations worksheetQuestions PDF · Answers
  • Beta: Skills in Ex 5.01, pg 92

Terminology

  • analogue
  • digital
  • 24-hour
  • duration

Task goals

  • Convert between units of time (seconds, minutes, hours, days), including converting decimal hours to hours and minutes.
  • Convert a time between 12-hour (am/pm) and 24-hour notation.
  • Find a duration (elapsed time) between a start and end time, or find a finish time given a start time and a duration.
  • Solve speed, distance, and time problems using the relationship speed = distance divided by time, including converting the answer's units.
  • Solve real-world duration and rate problems that combine several steps, such as time-zone differences or splitting a job's time evenly.
  • Identify and correct an incorrect claim about converting between decimal hours and hours-and-minutes, such as that 2.5 hours equals 2 hours 50 minutes.

Teaching guidance

  • You should consider converting between time units and speed=distance/time.
  • Derived units that reflect a relationship, e.g. cm², km/h
  • Fixed relationship between speed, distance and time: speed = distance / time

Key skills

  • Time conversion
  • Speed distance time
  • Rates
  • Derived units

Quick stats

  • 81 total questions
  • 3 difficulty levels
  • Answers included