Decimals
Additions and subtractions of decimal numbers, like giving change or doing your accounts. One decimal place at first, then one more every ten levels. The numbers flash by more slowly: there are more digits to read and remember.
How to play
Decimal numbers to add up (+ 2.5, − 0.8): one decimal place at first, one more every 10 levels. Answer with a dot, 4.8.
Example
2.5 − 0.8 + 1.6 = 3.3
Tips
- Count in tenths: 2.5 − 0.8 is 25 − 8 = 17, so 1.7.
- Add the whole parts on one side, the decimals on the other, then put them together.
- Answer with a point or a comma: 4.8 and 4,8 both work.
Solo or against someone
Solo, go as far as you can: the first mistake ends the game. Against someone, you play the same levels as your opponent: if you're the only one with the right answer, you win. All the rules