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Mental Maths
Maths games · free · no sign-up · works without internet once loaded
Add numbers up to 20.
21 versions
Each version keeps its own best score on your device.
- Addition: EasyAdd numbers up to 20.
Play - Addition: HardAdd 2-digit and 3-digit numbers.
Play - Subtraction: EasySubtract within 20.
Play - Subtraction: HardSubtract 3-digit numbers.
Play - MultiplicationMultiply a 2-digit number by a 1-digit number.
Play - DivisionExact division up to 12s.
Play - Mixed ArithmeticAll four operations, mixed.
Play - Simplify FractionsReduce fractions to lowest terms.
Play - Compare FractionsIs the first fraction smaller, equal or bigger?
Play - PercentagesWork out a percentage of a number.
Play - Squares and RootsSquares and square roots up to 20.
Play - Negative NumbersAdd, subtract and multiply with negatives.
Play - DecimalsAdd and subtract decimals.
Play - RoundingRound to the nearest 10, 100 or 1000.
Play - Roman Numerals: ReadTurn Roman numerals into numbers.
Play - Roman Numerals: WritePick the Roman numeral for a number.
Play - Binary to DecimalConvert binary numbers to decimal.
Play - Tell the TimeRead the time on an analog clock.
Play - Number Bonds to 10Find the missing number that makes 10.
Play - Number Bonds to 20Find the missing number that makes 20.
Play - Number Bonds to 100Find the missing number that makes 100.
Play
How to play Mental Maths
Goal
Practise mental arithmetic, one topic at a time.
How to play
- Most topics show a sum and you type the answer.
- Fractions, Roman numerals to write and telling the time give you choices to tap instead.
- Negative numbers and decimals unlock the minus and point keys.
- Right or wrong, the answer is shown before the next question.
How it ends
Each round is 10 questions (Mixed Arithmetic has 15). Your score is the number right.
Controls
Phone: tap the number pad and the tick. Keys: type digits, Enter to check, Backspace to delete. Choice questions: 1 to 4.
What changes in each version
21 topics: adding, taking away, times, divide, mixed, fractions, percentages, squares and roots, negatives, decimals, rounding, Roman numerals, binary, telling the time and number bonds to 10, 20 and 100.