More sheets come with a subscription
The first sheet at every level is free. A subscription gives you a new sheet whenever you want one — and the part paper cannot do: five minutes of practice a day that adapts to your child, and a weekly email naming exactly what they are stuck on.
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The mistakes behind most wrong answers
A wrong answer in number pairs that make 10 is rarely random. These are the ones that come up most often, each on a real problem — worth knowing before you mark a sheet, because the fix for each is different.
What makes 10?
9+?=10The answer is 1. A child who answers 10 probably started counting from the wrong number.
What makes 10?
?+8=10The answer is 2. A child who answers 3 probably counted one too many or too few.
What makes 10?
3+?=10The answer is 7. A child who answers 3 probably answered with one of the numbers shown.
In the app, every wrong answer is matched against mistakes like these, and the weekly email tells you which one your child keeps making — in those words, not as a percentage.