NumberPuzzle

Code breaker:Estimation

Thirteen calculations to estimate by rounding to 1 significant figure, ending with fractions and dividing by a number less than 1. The Code Box includes 45 and 90 for anyone who halves when dividing by 0.5. Two per A4.

A free key stage 3 and GCSE number puzzle with answers, spec code N14. It goes with the lesson on estimation.

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Code breaker:Estimation

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EstimationThe Maths Habit

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Estimation

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