GCSE Secondary Maths Age 13-17 - Number: Significant Figures - Explained

The video tutorial explains how to round the number 56.78 to one significant figure. It begins by introducing the concept of significant figures and uses a bank balance example to illustrate the importance of identifying the most significant digit. The tutorial then outlines the steps to round a number, emphasizing the rule that numbers five or more round up. It concludes by highlighting common mistakes, such as losing place value, and provides the correct rounded answer.

What does rounding to one significant figure mean?

Identify the most significant figure in the number 56.78.

What happens to the number 56 when rounding to one significant figure?

Explain the common mistake made when rounding to one significant figure.

What is the final answer when rounding 56.78 to one significant figure?