Not specified · Malta Lifestyle
I Used To Know That: Maths
€9.80
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Prices last checked 5 Nov 2026, 05:19 UTC. Delivery and checkout conditions apply.
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Merlin Library
Out of stock · Checked 5 Nov 2026, 05:19 UTC
About this product
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.