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

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

User Tim X
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1 Answer

5 votes
9 + 6 = 15
15 + 31 = 46

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