Which property or properties of arithmetic do you use when you calculate 370 by first calculating 37 = 21 and then putting a zero on the end of 21 to make 210? Write equations to show which properties are used and where

Question

Sofia

4 December, 00:48

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Answers (1)

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Braden Kemp · Answer 1

The property used is the Associative property

3 * 70 = 3 (70) = 3 (7*10) = (3*7) * 10

The formula is

a * bc = a (bc) = a (b*c) = (a*b) * c

Which property or properties of arithmetic do you use when you calculate 3*70 by first calculating 3*7 = 21 and then putting a zero on the end of 21 to make 210? Write equations to show which properties are used and where