Approximations and Estimations

 

Summary

when making calculations or taking measurements, numbers have to be approximated.

this is done by rounding off.

 

 

Key Skills

 

 

  • approximate a number to a certain number of significant figures.
  • approximate a number to a certain number of decimal places
  • give the order of accuracy of a measurement
  • estimate the value of numbers and the answers to problems before using a calculator.

 

Vocabulary

approximationestimationsignificant figures, decimal places,order of accuracy.