I Used to Know That: Maths

I Used to Know That: Maths

2010 • 192 pages

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15

Brush up on your mental arithmetic, including percentages, averages and recurring decimals or work on your trigonometry skills, from Pythagoras Theorem to triangle areas and angles. I Used To Know That: Maths is a fun and accessible way to re-visit all those useful tips and maths tricks that you have forgotten from your school days.

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5 released books

I Used to Know That

I Used to Know That is a 5-book series first released in 2008 with contributions by Caroline Taggart, Patrick Scrivenor, and Will Williams.


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