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stacy multiplied 5x9 and said the answer was 44. what two patterns could you use to show that her answer is not correct?Asked by Catie
stacy multiplied 5x9 andand said the answer was 44. what two patterns could you use to show that her answer is not correct?
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Answered by
Ms. Sue
Any number multiplied by 5 ends with either 0 or 5.
The digits of the product of 9 and any other number add up to 9 or a multiple of 9.
The digits of the product of 9 and any other number add up to 9 or a multiple of 9.
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