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Number starter: digit sorting

Screen grab of pdf viewer showing the digit cards


Students found the early questions straight forward. Debate became stronger about maximising the product of two two digit numbers - there was useful discussion about which of the two digit numbers had the largest units digit. I could have moved into algebra and FOIL at that point very easily.

There was also discussion about the smallest and largest differences - again the strategy was to decide which number had the largest or smallest unit digit.

The starter was adapted from an exam question on a Foundation GCSE paper some years ago. I think the practice at puzzle questions like this will be useful to Foundation GCSE students when tackling the paper.

Keith Burnett, Last update: Sun Sep 04 2011