About this worksheet
Find the mean of a set of numbers — add them up, then divide by how many there are.
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Column addition with carrying, for three or four numbers at a time.
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Long division by a single-digit divisor.
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Reading a decimal to one tenth, for the longest sets.
With mastery, the student can
- Work in order — total everything before dividing anything.
- Divide by how many values there are, not by a number from the set.
- Check the mean sits in the middle of the data, which catches most slips.