Find the pair that makes a third

Free on iPhone and Android

Five numbers. Exactly two of them add up to a third one.

Tap those two. Do it for every group, then do it once more with the answers you made — before the clock does it for you.

3board shapes

60leaderboards

8themes

One group, solved

3 + 5 = 8. That group is solved.

It tricks you into doing the work

To find the one pair you have to check the others — and checking pairs is addition, done in your head, over and over, faster each time. A single pentagon board asks for around a hundred of them. You will not count them. You will be too busy looking.

Solve each group and it collapses into one big shape carrying its answer. When every group is done, those answers are a puzzle of their own, in the same places. Watching the second puzzle assemble itself out of the first is the moment the whole thing clicks.

A pentagon board: five groups of five numbers, with the clock running. — Five groups of five, and a clock.

The five answers, now five big shapes, forming the last puzzle. — The answers become the last puzzle.

The result card: final time, solving time, penalty and rank. — Final time, solving time, penalty, rank.

For a seven-year-old and for you

Three boards Triangle (3 groups of 3), Square (4 of 4), Pentagon (5 of 5).

Five kinds of maths Add, subtract, multiply, divide — or a mix of all four in one round.

Four difficulties Easy is single digits. Expert runs to ninety-nine and the thirty times table. Same rule all the way up.

Sixty leaderboards One for every combination, ten best times each, recorded to the millisecond.

Eight themes Light and dark, including a blackboard and a blueprint.

Never a dead end Every board is generated and checked before you see it: exactly one answer per group, and one in the final group.

Get Math Mingle

Free on iPhone and Android, supported by advertising. There is no account and nothing to sign up for — the game opens and you play.

What it does not do

No account, no sign-up, no purchases and no analytics. Your times and settings live on your own device and leave with the app if you delete it — there is no server of ours for them to be sent to.

The game is free because it carries adverts, and the privacy policy says exactly where they appear: never while you are solving, never before you have read your time, and never in your first three rounds. The one you choose to watch, in exchange for two hints, stops the clock while it plays — so it can never cost you a leaderboard time.

The game

Publisher	Pingee Nexgen LLP
Platforms	iOS and Android
Price	Free, supported by advertising
Bundle ID	`com.pingee.mathmingle`

Anything else

Use the contact page for questions, problems, or anything else. A bug report with the board, difficulty and version in it is worth a great deal.