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Speed, distance and time

You learn to work out how far someone goes when you know the speed and the time.

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How to work it out

  1. Read the speed: that is how many miles you travel in 1 hour, and 1 hour is 60 minutes.
  2. For whole hours, multiply the miles by the number of hours.
  3. For minutes, find which part of the hour it is, and take that part of the miles.

A cyclist goes 16 km per hour. How far does he go in 3 hours?

  1. Read the speed: in 1 hour he goes 16 km.
  2. Multiply by 3 hours: 3 × 16 = 48.
  3. He goes 48 km.
More examples

A car goes 60 km per hour. How far does it go in 30 minutes?

  1. Find what part of the hour it is: 30 minutes is 12 hour.
  2. Take half: 60 ÷ 2 = 30.
  3. It goes 30 km.

A cyclist goes 18 km per hour. How far does he go in 40 minutes?

  1. Find what part of the hour it is: 40 minutes is 23 hour.
  2. Take 13: 18 ÷ 3 = 6.
  3. Multiply by 2: 2 × 6 = 12.
  4. He goes 12 km.