This this lesson we learn how to round numbers to a certain number of significant figures. Only large numbers bigger than 1 will be covered in this lesson. It would help if you are able to round to decimal places before trying this lesson as there are similar rules in both of these topics.

The questions covered in this lesson are i) round 376900 to 2 significant figures (2S.F) ii) round 504120 to 3 significant figures (3S.F) iii) round 87430 to 1 significant figure (1S.F)