Mathematics - 0580 CIE

Time

Overview

Telling and calculating with time is a skill we use every day, yet it trips people up because time is not based on tens: there are 60 seconds in a minute and 60 minutes in an hour. Reading timetables and working out durations correctly is a small skill that prevents big mistakes.

In this lesson you will calculate with units of time, switch between the 12-hour and 24-hour clock, and read clocks and timetables to work out durations and arrival times.

Objectives

  1. Calculate with time: seconds (s), minutes (min), hours (h), days, weeks, months, years, including the relationship between units.
  2. Calculate times in terms of the 24-hour and 12-hour clock.
  3. Read clocks and timetables.

Lesson Note

Time questions test careful reasoning rather than hard arithmetic. The trap is treating time as if it were decimal, so a clear method for durations and clock conversions protects easy marks.

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Lesson Evaluation

Congratulations on completing the lesson on Time. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.

You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.

Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.

  1. Write 3:45 pm using the 24-hour clock. A. 03:45 B. 13:45 C. 15:45 D. 16:45 Answer: C
  2. A train leaves at 14:35 and arrives at 16:20. How long is the journey? A. 1 h 45 min B. 1 h 85 min C. 2 h 15 min D. 1 h 55 min Answer: A
  3. How many minutes are there in 2.5 hours? A. 125 B. 150 C. 210 D. 250 Answer: B
  4. Write 08:20 using the 12-hour clock. A. 8:20 am B. 8:20 pm C. 20:08 D. 8:02 am Answer: A
  5. 1 hour 15 minutes written as a decimal number of hours is: A. 1.15 B. 1.25 C. 1.5 D. 1.75 Answer: B

Available on the Green Bridge App

Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.

Full lesson notes with diagrams
AI-powered learning assistant
Study offline, anytime, anywhere
Available on Android, Windows, macOS, and Linux

Available on the Green Bridge App

Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.

Full lesson notes with diagrams
AI-powered learning assistant
Study offline, anytime, anywhere
Available on Android, Windows, macOS, and Linux

Practice Mock Questions

Want to practice mock questions on Time? Download the Green Bridge CBT app to access mock questions and full practice assessments for this topic.

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