posted by Joe .
Explain how you can break apart 3x9 to help you multiply.
You can break up 9 to 3 x 3.
Then you have 3 x 3 x 3= 27
I don't know how much easier that makes it, but I guess you could do it that way. The smaller the numbers you're working with, the smaller the chance you'll mess up.
Tessie multiplied 3x4, and then doubled it to find 6x8.Did she get the correct answer?Explain.