Lesson Plan of Subtract Units of Time

Lesson Plan of Subtract Units of Time

Subject Mathematics

Grade III

Students` Learning Outcomes

  • Subtract units of time in hours.
  • Solve real life problems involving subtraction of units of time in hours.

Information for Teachers

  • Units of time are used to measure the duration between the occurrences of two events.

Subtract Units of Time

  • The smallest unit of time is second.
  • The other units of time are minute, hour, day, week, month, and year.

Subtract Units of Time

Time unit hour can be subtracted from hours.

  • While teaching the lesson, also consult textbook where and when applicable.

Material / Resources

Writing board, chalk/marker, duster, pointer/stick, textbook


  • Ask students:
      • How many hours are in one day?
      • If you spend 6 hours each day in school then how many hours do you spend on other activities?
  • Explain the subtraction procedure on the board.

Subtract Units of Time


Activity 1

  • Write the following statements on the board and then ask questions.
  • Maroon and his wife reached Islam Abad from Lahore in 8 hours by train and taxi. They travelled two hours by taxi. How long did they travel by train?

Subtract Units of Time

  • Zara finished her homework in three hours. She completed Math`s work in one hour. How much time could she spare for rest of the homework?

Subtract Units of Time

Activity 2

  • Ask students to find the difference between the following pairs of time:

Subtract Units of Time

Sum up / Conclusion

  • Among hours, minutes and seconds, hour is the biggest unit of time. Hours can be subtracted from hours through simple mathematical subtraction process.


  • Akram slept only 4 hours yesterday night. How much time he remained busy during the whole day?

Follow up

  • Nadia covered a distance in 3 hours. Ahmad covers the same distance in 2 hours. How much more time Nadia took to cover the same distance than Ahmad?
  • Ask the students to solve the questions given in the textbook.

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