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Plain-English guides to the maths behind everyday calculations, with worked examples and a calculator for every method.
- Plain English Every formula explained
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Math guides
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Math guides
How to Calculate Area and Volume
Area and volume formulas for every common shape, the unit conversions that trip people up, and a real concrete-slab example worked from start to…
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Math guides
How to Calculate Percentages: A Complete Guide
Three different questions all get called calculating a percentage. Here is how to tell them apart, and where the answers go quietly wrong.