mathliteMental math articles
Tricks, guides and practice ideas for doing math in your head, faster: multiplication, percentages, everyday math and more.
How to Work Out Percentages in Your Head (and Tips and Discounts)
Find 10%, 5%, 15%, 20% and 25% of any number in seconds, work out tips and sale prices, and use the swap trick that makes awkward percentages easy.
Read the article →How to Multiply Two-Digit Numbers in Your Head
Four ways to multiply two-digit numbers mentally, from splitting to cross multiplication and the near-100 shortcut, with worked examples and practice problems.
Read the article →10 Mental Math Tricks Anyone Can Learn
Ten mental math tricks with worked examples: multiply by 5, 9, 11 and 25, square numbers ending in 5, subtract from 1000, and more. Each one takes minutes to learn.
Read the article →Mental Math for Everyday Life: Shopping, Change and Splitting the Bill
Practical mental math for real life: keep a running total while shopping, check your change, split a bill, compare prices and work out time, with examples.
Read the article →How to Do Mental Math Fast: 7 Habits That Actually Work
Fast mental math isn’t a gift, it’s a handful of habits. Learn to work left to right, round and adjust, split numbers and practise in a way that sticks.
Read the article →The Best Mental Math Apps in 2026: How to Pick the Right One
Mental math apps fall into three kinds: trick-teaching courses, timed drills and brain-training games. Here’s what each is good for, with examples, and how to choose.
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