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.
$5 a child a month, never more than $12 for the family. The first 7 days are free and need no card.
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The mistakes behind most wrong answers
A wrong answer in mixed numbers 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.
- 528−118=?
The answer is 418. A child who answers 4116 probably changed the bottom number too.
- 558−148=?
The answer is 418. A child who answers 428 probably counted one too many or too few.
- 348−218=?
The answer is 138. A child who answers 538 probably added instead of taking away.
- 416+126=?
The answer is 536. A child who answers 336 probably took away instead of adding.
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.