paige1614
01.10.2019 •
Mathematics
Sue wants to use mental math to solve 7 times 53. what is an expression that she can use?
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Ответ:
7 x 53 = (7 x 5 x 10) + (7 x 3)
7 x 5 x 10 = 35 x 10 = 350
7 x 3 = 21
350 + 21 = 371
Ответ: