Ron Gwairown always writes numbers down back to front. At school, he was once asked to do the following calculation:
14 x 82
In his exercise book Ron wrote down:
41 x 28
1. What answer did he get?
2. What answer should he have got?
3. Investigate other pairs of calculations of this type? What can you discover?
Topics: Starter  Arithmetic  Investigations  Place Value
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88 x 33 88 x 44 88 x 55 88 x 66 88 x 77 88 x 88 88 x 99 89 x 98 91 x 19 92 x 29 93 x 13 93 x 26 93 x 39 94 x 49 95 x 59 96 x 23 96 x 46 96 x 69 97 x 79 98 x 89 99 x 11 99 x 22 99 x 33 99 x 44 99 x 55 99 x 66 99 x 77 99 x 88 99 x 99 
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