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Question
Sandra used partial products to find the product of 438×17
by multiplying 438 by 1 and 438 by 7 to get 3,066. Find the product of 438×17
by using partial products. Is Sandra correct? Compare your answer to Sandra's and explain why it is or is not the same.
Two sentences
(4 points)
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1 answer
The product of 438×17 using partial products is 7,446. Sandra's answer of 3,066 is incorrect. She should have multiplied 438 by 10 and then by 7, not by 1 and 7.
1 answer