A Ninja Maths Master Knows How to Estimate Things…

A Ninja Maths Master should be able to make quick estimates:

Q1: How many people can fit onto a double decker bus?

A1: Between 65 & 75 is a good answer

Q2: How many grains of uncooked rice in a cup?

A2: Between 5,000 and 10,000 is a good answer

If a child gets an estimate way off target they should explain how they arrived at their estimation. A guess is insufficient, it must be an estimate arrived at using thought and sometimes a pen & paper.

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