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To find 19 + (11+37), Lennie added 19 and 11. Then he added 37 to the sum. What property did he use?
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To find 19 + (11+37), Lennie added 19 and 11. Then he added 37 to the sum. What property did he use?

User Henk Van Boeijen
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5 votes
He used associative property
User Nakkor
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lennie used associative law of addition.

a + (b + c) = (a + b) + c

hope that helps, God bless!
User Khaledh
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