Short Division with 1 and 2 digit divisors,

The purpose of this week's lesson was to reinforce short division with 1 and 2 digit divisors. The algorithm has many steps but we focused on reducing risk.

For instance, if the children are dividing by 2, they should write down in the margins the first nine multiples of 2 such as 2,4,6,8,10,12,14,16,17,18.

If they are dividing by 7, they write down 7,14,21,28,35,42,49,56, and 63.

Now they follow the algorithm and steps on the attached pdfs.

I had them divide the nine digit number 123,456,789 by 2 through 9. The objective was for them to get a rhythm of dividing into a single or two digit number; then finding the remainder (the amount that was unused).

After they correctly solve these first divisions, they should divide the number 987,654,321 by 2 through 9 to see if there are any patterns in the answers (quotients).

The last page in one of the pdfs contains many fun facts like there are 5,280 feet in a mile. Then they can divide those numbers by two to find half a mile, divided by 3 to find a third of a mile and so forth.

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division_short_method.pdf904.4 KB