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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 number patterns 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 comes next?
15,75,375,1,875The answer is 9,375. A child who answers 1,880 probably added instead of multiplying.
What comes next?
2,6,18,54The answer is 162. A child who answers 108 probably counted one group too many or too few.
What comes next?
13,52,208,832The answer is 3,328. A child who answers 832 probably started counting from the wrong number.
What comes next?
4,8,16,32The answer is 64. A child who answers 65 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.