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Class 5

Chapter 5: Far and Near

Estimating means making a sensible guess before measuring. On a map, a scale tells us how a small distance on paper stands for a real distance.

Learning outcomes

  • Estimate distances around the school
  • Use scaling on simple maps

Activities

  • Pace-out distances and graph

Worked examples

Read through these first, then try the practice below.

  1. Example 1 — Use the scale

    On a map, 1 cm represents 100 m. Two points are 4 cm apart on the map. What is the real distance?

    Solution: 4 × 100 = 400 m.

  2. Example 2 — Best estimate

    Which is the best estimate for the length of a school playground: 5 m, 50 m, or 5 km?

    Solution: 50 m is most realistic.

Self-do practice

Question 1 of 3 · Score 0/0

On a map where 1 cm = 200 m, what real distance is 3 cm?

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