Calculator

Mental arithmetic against the clock: a sum appears, you type the answer, and the next one follows immediately. Seven kinds of sums, three modes.

Streak and history

Sign in so your games are linked to your account. You then get a daily streak, a level and a history where every single calculation stays available.

Simple multiplication with numbers from 1 to 10.

Multiplication with numbers from 1 to 20.

Multiplication with numbers from 1 to 100.

2 to 3 numbers, only plus and minus, up to 99.

3 to 4 numbers, all operators, up to 99.

4 to 5 numbers, all operators, up to 150, rarely squares.

5 to 6 numbers, all operators, up to 200, rarely squares.

You pick an operation, from the small times tables up to extreme terms, and one of the three game types.
A problem appears, you type the result and confirm, and the next one follows at once. Survival ends at the first mistake, One minute counts for sixty seconds, and in Tick tack every correct answer adds time while every wrong one costs some.
What counts is the number of correct answers, weighted by the operation. Afterwards the review shows every problem with your answer and the time you took.