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Mrs. Dewey drew this diagram on the board. She said, “The area of each part of the rectangle is a different piece of the multiplication problem. It is efficient to break apart the factors into Tens and Ones.”
- How did Grace break apart 13 and 24?
- Which part of Grace's rectangle is the largest? Which is the smallest?
- If you want to estimate an answer to 13 24, which part of the rectangle would be the best to use? Why?
Use Grace's method of breaking apart the factors into tens and ones to solve the problems on the Multiplying with Rectangles pages in the Student Activity Book.
