Step 8 Objective
Round numbers to a given number of significant figures.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Examples of what pupils should know and be able to do
Know when to insert zeros as placeholders to indicate the degree of significance of the number. For example, 1.4007 is 1.40 to three significant figures.
Use numbers rounded to a given number of significant figures to work out an approximate answer.