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QMMaths

Estimation

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Answers

    Round the following number to one significant figure.

  1. 14
  2. 127
  3. 94999
  4. 0.16
  5. 0.0000824
  6. Write the calculation you need to do to estimate this expression

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

  7. 3.7 \times 3.2 + 1.8
  8. 6.64 + 7.86 \times 28
  9. 8.87^{2.22} + 3.41
  10. 40.52 \div 8.46
  11. \left( 61.37 - 41.76 \right) \times 37.89
  12. Write the calculation you need to do to estimate this expression

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

  13. Write the calculations needed to estimate \frac{3.6 + 5.4}{5.3 - 1.6} .
  14. Perform these calculations.
  15. Write the calculations needed to estimate \frac{28.7 \times 19.7}{62.1} .
  16. Perform these calculations.
  17. Write the calculations needed to estimate \frac{76 \times 3.1}{0.22} .
  18. Perform these calculations.
  19. Write the calculations needed to estimate \frac{54.7 + 39.9 \times 4.75}{0.497} .
  20. Perform these calculations.