Multiplication table of a number

What it's for

Type a number and out comes its times table from 1 to 10, ready to read aloud or to print. It's for the school years when times tables are learned, and afterwards, for anyone who has forgotten them and needs a refresher without opening a book. It works with decimal numbers too, so it also does for a quantity («how much is 1.5 for seven servings»).

Times tables are fewer than they look

They look like a hundred results to memorize, and they aren't. Multiplication is commutative: 7×8 and 8×7 give the same thing, so half the table is a photocopy of the other half and the genuinely different results are fifty-five. Take away the ones (which change nothing), the tens (which add a zero) and the fives and twos, learned straight away, and about fifteen hard cases remain: 6×7, 7×8, 6×8, 7×9 and little else.

Two tricks that really work

The nine has a rule of its own: in every result the two digits add up to nine (18, 27, 36, 45…) and the first digit is the multiplier minus one. On your fingers it's clearer still: open both hands, fold down the finger matching the number, and count the fingers to the left as tens and those to the right as units.

The five is always half of the ten: if you know 8×10 is 80, then 8×5 is 40. And for the four you just double twice: 7×4 is 7 doubled (14) and doubled again (28).

Nearby tools

To work out a part of a quantity there is Fraction of a number. For everyday percentages Percentage calculator, and for expressions with brackets Scientific calculator.