Cover art for I Used to Know That: Maths
Published
Omara Books, August 2010
ISBN
9781843174745
Format
Hardcover, 192 pages
Dimensions
20.6cm × 13.6cm × 2.4cm

I Used to Know That: Maths by

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Brush up on your mental arithmetic, including percentages, averages and recurring decimals or work on your trigonometry skills, from Pythagoras' Theorum to triangle areas and angles.

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