Pupils have to answer several true or false statements relating to whether multiples can be made using numbers in a list (have a look at the worksheet and you'll get the idea!) They then have to try and come up with clear explanations as to why the statements are true or false, and there is the opportunity to use algebra. Can be extended into longer lists and multiples of larger numbers. If you like this resource then please check out my other stuff on here! :)
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I liked the warm up and 3 out of four of the statements. There are answers for those three statements.
The last statement (and the challenge isn't clear either) is very unclear. It says "To always have a group of 4 that add to a multiple of 4, I need 6 numbers." which I and my colleagues can't make heads or tails of! What is meant here? There's no explanation in the powerpoint unfortunately.
The other statements were useful as an independent/group task for different groups of children.
Empty reply does not make any sense for the end user