Rounding & Estimation: Using Significant Figures

A series of activities for students to practise rounding to a given number of significant figures and estimating calculations.

1. Significant Figures True or False Activity
This activity contains a grid of statements about how numbers have been rounded, such as '54.5' has been rounded to 2 significant figures. Students must shade the eight statements that are true. The format of this activity makes it easy to check if students understand the concept and there is a second version of the puzzle that could be set at a later date as homework for revision. Answers are included.

2. Significant Figures Grid Puzzle & Multiple Choice Questions
This contains two activities. The first is a grid puzzle where student must decide where to position a set of numbers in order to make a series of statements true. There is also a follow up worksheet with some straightforward practise and multiple choice questions about significant figures. Answers are included.

3. Estimation Worksheet
This is a worksheet for estimating calculations by rounding to 1 or 2 significant figures. It also has a section to practise estimating square roots. A set of starter questions are included for discussion with students. Includes answers.