Use properties of addition to find each sum mentally. Show your steps and identify the properties that you used. 1. 9 + 6 + 31 =

PaulHurleyuk asked Apr 22, 2022

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22 votes

Use properties of addition to find each sum mentally. Show

your steps and identify the properties that you used.
1. 9 + 6 + 31 =

PaulHurleyuk asked Apr 22, 2022

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14 votes

9 + 6 = 15
15 + 31 = 46

added 9 and 6 to get 15, then added 15 and 31 to get 46.

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