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Year 7 - Maths

Securing understanding of ordering and comparing numbers

Place value

Unit Summary

In this unit pupils revisit, secure and develop their understanding of place value with integers, decimals, fractions, metric and imperial units. This knowledge is then extended to order and compare numbers of increasing complexity.

Lesson Summary

You will learn to confidently order and compare a variety of numbers and measures.

Key Notes

  • In order to compare measures, conversion may be necessary.
  • Measures can be converted using place value.
  • Values can be ordered using inequality symbols.

Vocabulary To Learn

  • Inequality: An inequality is used to show that one number or measurement is not equal to another.

Common Mistakes To Avoid

  • The number with the largest value is the greatest measurement.

3 Quick Questions (With Answers)

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

In order to compare measures, conversion may be necessary. Measures can be converted using place value.

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

An inequality is used to show that one number or measurement is not equal to another. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: The number with the largest value is the greatest measurement. Correction: Converting to the same unit can be helpful before comparing the place value of the digits. e.g. 0.4 m is bigger than 40 mm.

More Lessons In This Unit

Browse all guides in the Year 7 Maths guide library.