Maths Games for Adults

Keep mental arithmetic sharp with quick daily games you can finish in two minutes.

Other age groups:
Maths Games for Kids (6-10) Maths Games for Juniors (11-14) Maths Games for Teenagers Maths Games for Adults Brain Games for Seniors

69 games

Target Number: Classic

All four operations, two-digit numbers

Target Number: Expert

Larger numbers, tighter margins

Missing Operator: Standard

All four operations

Missing Operator: Hard

Three-digit numbers, all operations

Balance the Equation: Algebra

Solve for x in linear equations

Number Bonds: Bonds to 100

Multiples of five to a hundred

Number Bonds: Decimal Bonds

Pairs that make one whole

Rounding Rush: To the Nearest Thousand

Large numbers at speed

Rounding Rush: Decimal Places

Round to one or two decimals

Fraction Match: Hard

Larger denominators, closer decoys

Fraction, Decimal, Percent: Standard

The everyday set

Fraction, Decimal, Percent: Hard

Eighths, sixteenths and thirds

Fraction, Decimal, Percent: Money Sense

Conversions you use while shopping

Percent Power: Standard

The full everyday range

Percent Power: Discounts

What you actually pay in the sale

Percent Power: Reverse Percentages

Find the original number

Roman Numerals: Film Credit Years

Read the date off the credits

Roman Numerals: Expert

The full range to 3,999

Number Bases: Binary to Decimal

Read binary numbers

Number Bases: Decimal to Binary

Write binary numbers

Number Bases: Hexadecimal

Base sixteen, the colour-code base

Number Bases: Octal & Mixed

Base eight and mixed conversions

Vedic Maths Tricks: Squares Ending in Five

25², 35², 85² instantly

Vedic Maths Tricks: Near a Hundred

Nikhilam: multiply using deficits

Vedic Maths Tricks: Vertically & Crosswise

Two-digit multiplication in one line

Clock Arithmetic: 24-Hour Clock

Timetable time

Clock Arithmetic: Days of the Week

What day will it be?

Clock Arithmetic: Pure Modulo

Remainders as a topic in themselves

Divisibility Rules: 4, 6 and 8

The last-two-digits family

Divisibility Rules: The Rule of Eleven

Alternating digit sums

Odd One Out: Standard

Fractions, decimals and percentages

Odd One Out: Hard

The odd one is only a hundredth away

Odd One Out: Percentage Focus

Everything as a percentage

Greater or Less: Standard

Fractions against decimals

Greater or Less: Everything Mixed

All representations at once

Estimation Challenge: Large Sums

Estimate big additions

Estimation Challenge: Division

Estimate a quotient

Estimation Challenge: Percentages

Estimate a percentage of a number

Prime Hunter: Primes to 100

The classic range

Prime Hunter: Primes to 300

Where the tricks matter

Prime Hunter: Speed Run

Thirty seconds, small grid

Factor Frenzy: Hard

Targets to 200

Factor Frenzy: Marathon

Ten rounds, mixed sizes

Sieve of Eratosthenes: Sieve to 100

The full hundred grid

Sieve of Eratosthenes: Sieve to 150

Beyond the hundred square

Magic Square: 3x3 Hard

Six blanks, much less to go on

Magic Square: 4x4

The Dürer square

Magic Square: 4x4 Expert

Ten blanks on a sixteen-cell grid

Tower of Hanoi: 4 Discs

Fifteen moves, the classic

Tower of Hanoi: 5 Discs

Thirty-one moves

Tower of Hanoi: 6 Discs

Sixty-three moves, for the patient

Number Span: Forward Span

Type them in order

Number Span: Backward Span

Type them in reverse

Number Span: Fast Forward

Half a second per digit

N-Back: 1-Back

The gentle introduction

N-Back: 2-Back

The standard challenge

N-Back: 3-Back

Genuinely difficult

N-Back: 2-Back Fast

Same task, less thinking time

Grid Recall: 4x4 Grid

The standard board

Grid Recall: 5x5 Grid

Twenty-five squares

Grid Recall: Fast 4x4

Half-second flashes

Calcudoku: 4x4

The standard puzzle

Calcudoku: 5x5

Twenty-five cells

Calcudoku: 6x6

The full-size challenge

Quick Math Quiz

Ten timed arithmetic questions that get harder as you go.

2048

Slide and merge tiles to reach 2048.

Sudoku

The classic nine-by-nine logic puzzle.

Sequence Puzzle

Work out the rule and continue the sequence.

Mental Math Challenge

Mixed operations against a countdown.

About these games

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.