Solving two step equations using inverse operations

A complete lesson on solving two step equations using inverse operations. Does include some decimals, as I wanted to give a more complete example set and make it hard for pupils to just use trial and error to find solutions. As such, I would let pupils use calculators.

Activities included:

Starter:
A set of questions to check that pupils can evaluate two step expressions like 2x+3, given a value of x

Main:

• A prompt to discuss the differences between two equations (a one step and a two step with the same solution), to get pupils thinking about how they could approach the latter.
• Examples and a set of questions on using inverse operations to reverse a two step flowchart and solve its corresponding equation. These have been deigned to further reinforce the importance of BIDMAS when interpreting an algebraic expression, so the emphasis is on quality not quantity of questions.
• A more challenging task of pupils trying to make an equation with a certain solution. Designed to be extendable to pupils looking for generalistions.

Plenary:
A prompt to discuss a few less obvious one-step equations (eg x+8+3=20)

Printable worksheets and answers included.

Please review if you buy as any feedback is appreciated!