Core arithmetic, fractions and percentages — the skills that make mental maths effortless.
Other benefits:
Boost Memory Mind Sharpness Strong Mind Smart Mathematician Rare Maths
Small numbers, addition and subtraction only
All four operations, two-digit numbers
Larger numbers, tighter margins
Times tables under pressure
Plus and minus, numbers under 20
All four operations
Multiplication and division only
Three-digit numbers, all operations
Addition and subtraction to 30
All four operations
Multiplication and division only
Solve for x in linear equations
The first and most important set
The next step up
Multiples of five to a hundred
Pairs that make one whole
The friendly fractions first
Denominators up to twelve
Larger denominators, closer decoys
Reduce to lowest terms
Halves, quarters, fifths and tenths
The everyday set
Eighths, sixteenths and thirds
Conversions you use while shopping
Ten, twenty-five and fifty percent
The full everyday range
What you actually pay in the sale
Find the original number
Targets under 30
Targets to 100
Targets to 200
Ten rounds, mixed sizes
Drill any times table with a streak counter.
Every game on YogiCalc is free, runs entirely in your browser, needs no sign-up and saves your best score on your own device. Nothing is uploaded anywhere. They work on a phone, a tablet or a computer.
Looking for something else? The full games library lists all 110 games, and the calculator library covers finance, tax, health and conversion.