Making a percentage change using a multiplier

A complete lesson on using calculators to directly make percentage changes, e.g. increasing by 5% by multiplying by 1.05

Activities included:

Starter:
A recap on making a percentage change in stages, e.g. increasing something by 5% by working out 5% and adding it to the original amount.

Main:

• Examples and quick questions for pupils to try, along with some diagnostic questions to hopefully anticipate a few misconceptions.
• A worksheet of questions with a progression in difficulty.
• An extension task/investigation designed to challenge the misconception that you can reverse a percentage increase by decreasing by the same percentage.

Plenary:
A question in context - working out a restaurant bill including a tip.

Printable worksheets and answers included.

Please review if you buy, as any feedback is appreciated!