Writing big numbers and small numbers, with a prelude on different powers of ten. Example problem pairs, and some exercises. Full lesson (or two)

Going through your typical proportion questions, focusing on how to pick which type of proportion is needed. CHANGELOG 9/12/2022 Updated answers.

A really simple starter that should be the jumping off points for discussion. Loads of numbers with zeroes in. Some needed. Some not. Some COULD be needed (if you’re dealing with currency or bearings etc) A conversation starter.

A simple little slide to put up for discussion. Is this 1 needed? Ignore the preview, it looks fine when downloaded.

Simple one-sheet of questions. The aim of this one is to explicitly talk about doing calculations that do not change the result. ie : multiplying by one, and explicitly linking something like 5/5 to the concept of one.