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Strategies for subtracting tens and near tens
An animation demonstrates how to easily subtract tens and near tens. Forty-four apples are picked and loaded into a pram so they can be sold. Ten are removed because they are bruised, and a further 11 are removed because they are maggoty. The main character subtracts 10 from 44, then takes us through the strategy for subtracting 11 by taking away 10 and then 1. After this, 9 more apples fall out of the pram. The character works out how many he has left by subtracting 10 and adding 1 back. Throughout the animation a secondary character eats the apples, so the main character also needs to subtract 1 from various numbers.
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