Mental math · 4 MIN READ
How to get better at mental math
A practical starting point when numbers make you hesitate.
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A way to work it out.
For the calculation that trips you up, the rule you’ve forgotten, or the idea you’d like to understand a little better.
Mental math
Mental math · 3 MIN READ
Times tables, with a way to work them out
Use the facts you know to rebuild the ones you forget.
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How to subtract in your head without losing track
Three ways to make subtraction easier, and how to choose between them.
Read the articleEveryday numbers
Everyday numbers · 3 MIN READ
Percentages without a calculator
Find 10%, 5%, 25%, and everything in between using a few easy pieces.
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Fractions of numbers, explained simply
Divide into equal parts. Take the parts you need.
Read the articleEveryday numbers · 4 MIN READ
Percentage change: why the starting number matters
Calculate an increase or decrease, and see why a 20% fall needs a 25% rise to recover.
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