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Wednesday, October 19, 2016

Division Strategy: Partial Products and Ratio Tables

With this strategy, we use a ratio table to build multiples of the divisor, starting with 1 set.  We can use place value, doubling, and halving to make 10, 2, and 5 sets of the divisor. We want to try to build a big "chunk" of the dividend using the ratio table, which we will then subtract from the remaining amount of dividend. We will continue to subtract sets of the the divisor from the dividend until we cannot subtract anymore sets. If we have any left over, this will be our remainder. We then add up all of the sets we made, and this is our quotient.
Here are some screenshots of this strategy
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