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# Contents

- Introduction
- Learning outcomes
- 1 Rounding
  - 1.1 Rounding in daily life
  - 1.2 Rounding whole numbers
    - 1.2.1 Rounding to the nearest hundred
    - 1.2.2 Rounding to the nearest ten
  - 1.3 Rounding in general
    - 1.3.1 Try some yourself
  - 1.4 Rounding decimals
    - 1.4.1 Try some yourself
  - 1.5 Significant figures
    - 1.5.1 Try some yourself
  - 1.6 Significant figures for numbers less than one
- 2 Estimation
  - 2.1 Using estimations
    - 2.1.1 Try some yourself
- 3 Checking your answers
  - 3.1 Have I done the right calculation?
    - 3.1.1 Try some yourself
  - 3.2 Have I used the correct order for my calculation?
    - Try some yourself
  - 3.3 Have I given due consideration to units of measurement?
    - 3.3.1 Try some yourself
  - 3.4 Did I make a rough estimate to act as a check?
    - 3.4.1 Try some yourself
  - 3.5 Does the answer make sense in the real world?
    - 3.5.1 Try some yourself
  - 3.6 Additional practice
    - 3.6.1 Try some yourself
- Conclusion
- Keep on learning
- Acknowledgements

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