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QMMaths

Estimation

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Answers

    Round the following number to one significant figure.

  1. 30
  2. 603
  3. 249999
  4. 0.76
  5. 0.0556

    6. Write the calculation you need to do to estimate this expression

    E.g. to estimate 3.55 + 6.86, write 4 + 7

  6. 7.3 \times 7.3 + 4.2
  7. 7.05 + 7.97 \times 46.5
  8. 7.05^{2.41} + 5.89
  9. 54.75 \div 5.502
  10. \left( 60.66 - 32.37 \right) \times 74.67

    11. Write the calculation you need to do to estimate this expression

    E.g. to estimate 3.55 + 6.86, write 4 + 7

  11. Write the calculations needed to estimate \frac{3.8 + 4.6}{5.2 - 1.7} .
  12. Perform these calculations.
  13. Write the calculations needed to estimate \frac{25.8 \times 17.1}{58.7} .
  14. Perform these calculations.
  15. Write the calculations needed to estimate \frac{67 \times 6.5}{0.19} .
  16. Perform these calculations.
  17. Write the calculations needed to estimate \frac{69.5 + 44.1 \times 6.09}{0.522} .
  18. Perform these calculations.