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Year 7 - Maths

Limitations of technology in calculations

Comparing and ordering fractions and decimals (positive and negative)

Unit Summary

This unit develops understanding and manipulation of fractions, including conversion between fractions to terminating and recurring decimals. Pupils then learn strategies to order fractions of increasing complexity.

Lesson Summary

You will learn to enter fractions as divisions on a calculator (and other technology) and understand the limitations of the decimal representation that results.

Key Notes

  • The line in a fraction means divide.
  • A calculator can be used to convert a fraction to a decimal using division.
  • There might be limitations of the decimal representation of fractions.

Vocabulary To Learn

  • Recurring decimals: A recurring decimal is one that has an infinite number of digits after the decimal point

Common Mistakes To Avoid

  • Incorrect inputting of negative numbers and/or exponents.

3 Quick Questions (With Answers)

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

The line in a fraction means divide. A calculator can be used to convert a fraction to a decimal using division.

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

A recurring decimal is one that has an infinite number of digits after the decimal point. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Incorrect inputting of negative numbers and/or exponents. Correction: Encourage the use of brackets when using exponents.

More Lessons In This Unit

Browse all guides in the Year 7 Maths guide library.