Tuesday, November 30, 2010

6-6 Multiply multi-digit numbers

Listen to Lucky's Voki explain how to solve number one.

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Number two
293
x 5

First step
Draw and arrow from 5 to 3. Now multiply 5 times 3. You'll get 15. Write the 5 on the bottom and regroup the 1 over the 9.
Second step
Draw and arrow from the 5 to the 9. Now multiply 5 times 9. You'll bet 45 BUT you also have to add the regrouped 1, to give you 46. Write the 6 on the bottom and regroup the 4 over the 2.
Third step
Draw and arrow from the 5 to the 2. Now multiply 5 times 2. You'll get 10 BUT you also have to add the regrouped 4, to give you 14. Write the 14 on the bottom. We're done, so there is no need to regroup.

Your product is...... 1,465

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