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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 counting coins 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.
How much money is this?
$125¢10¢5¢5¢5¢The answer is $1.50. A child who answers 6¢ probably counted the coins instead of what they are worth.
How much money is this?
10¢5¢5¢The answer is 20¢. A child who answers 15¢ probably gave every coin the same value.
How much money is this?
25¢25¢10¢10¢5¢5¢The answer is 80¢. A child who answers 55¢ probably missed one while counting.
How much money is this?
$110¢5¢5¢The answer is $1.20. A child who answers $1.21 probably counted one too many or too few.
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.