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The mistakes behind most wrong answers
A wrong answer in what the leftover means 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.
Kai is packing 47 cards into boxes. Each box holds 8. How many boxes are needed to fit them all?
The answer is 6. A child who answers 5 probably forgot the leftover still needed somewhere to go.
Zara is packing 52 pencils into boxes. Each box holds 3. How many boxes are needed to fit them all?
The answer is 18. A child who answers 1 probably gave the leftover instead of how many groups.
Ava is packing 28 blocks into boxes. Each box holds 3. How many boxes are needed to fit them all?
The answer is 10. A child who answers 11 probably counted one group too many or too few.
Owen is packing 20 leaves into boxes. Each box holds 8. How many boxes are needed to fit them all?
The answer is 3. A child who answers 20 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.