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Year 4 - Maths

Use knowledge of measure conversions to interpret graphs and tables

Calculation and conversion of measures

Unit Summary

In this unit pupils will use knowledge of 1000 to explain common measure conversions and solve problems.

Lesson Summary

You can use knowledge of measure conversions to interpret graphs and tables.

Key Notes

  • There are 1,000 g in a kg
  • There are 1,000 ml in a l
  • There are 1,000 mm in a m
  • Information relating to measures such as length and mass can be presented in the form of tables or graphs.

Vocabulary To Learn

  • bar graph: A graph drawn using rectangular bars to show how large each value is. The bars can be horizontal or vertical.
  • interval: What is in between two values or points. On a bar graph these may be marked using numbers or unmarked.

Common Mistakes To Avoid

  • When reading bar graphs with unmarked intervals, some pupils might assume each interval equals 1. In the case of the graphs presented in this lesson, the intervals go up in 100s, 200s, 250s and 500s.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

There are 1,000 g in a kg. There are 1,000 ml in a l.

2. Use this key word in a maths sentence and explain it clearly. 'bar graph'

A graph drawn using rectangular bars to show how large each value is. The bars can be horizontal or vertical. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: When reading bar graphs with unmarked intervals, some pupils might assume each interval equals 1. In the case of the graphs presented in this lesson, the intervals go up in 100s, 200s, 250s and 500s. Correction: Encourage children to apply their knowledge of converting a unit into 1,000 (such as 1 litre being converted into 1,000 ml) and then exploring its composition in 2, 4, 5 and 10 equal parts. Check the unmarked intervals by counting in those steps.

More Lessons In This Unit

Browse all guides in the Year 4 Maths guide library.