I Used to Know That: Maths
I Used to Know That: Maths - Paperback is backordered and will ship as soon as it is back in stock.
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Care information
Keep books away from direct sunlight and damp conditions to protect the binding and pages. Handle with clean, dry hands and use a bookmark instead of folding page corners.
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I Used to Know That: Maths
I Used to Know That: Maths - Paperback is backordered and will ship as soon as it is back in stock.
Description
Description
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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