Ages 6 to 7
Subtraction game in space
A subtraction game for ages 6 and 7 in space. The game reads a sum aloud, such as "What is 9 minus 4?", and for small ones shows what is taken away as faded pictures. Your child taps the right answer, over three races, each a little harder.

What it teaches
- Taking away within 10, then within 15 and 20
- Seeing what is left after taking away
- Close answers that ask for a careful look
How to play
Hear a question
The game reads the question aloud and shows it on a card. A tap on the card says it again.
Tap an answer
A few answers float up as balloons, and the hero leaps to the one tapped: a right one pops and moves the hero a step on.
Win the race
A friendly rival moves only on a miss, never on a clock. Reach the goal first in three races, each a little harder.
Good to know
- Free, no sign-up, on a phone, a tablet or a computer.
- Every question is read aloud, for children who cannot read yet too.
- Answers are worked out by code, never guessed: a right answer always counts as right.
- No clock and no game over: a miss shows the right answer, and a lost race starts again a little easier.