Ann1971 Ann1971

02-12-2016
Mathematics

contestada

Sue wants to use mental math to find 7x53 write an expression she could use

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cgnmodel cgnmodel

02-12-2016

7 x 53 =

7 x 3 = 21

7 x 50 =
7 x 10 = 70
70 x 5 = 350

350 + 21 + 371

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sososarah sososarah

02-12-2016

an expression that see can use is 7×50+7×3

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