To find 19 + (11+37), lennie added 19 and 11. then he added 37 to the sum. what property did he use?

Question

Mathematics

Mary

25 December, 02:26

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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Answers (1)

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Lana Mcgrath · Answer 1

Lennie used associative law of addition.

Associative law of addition doesn’t matter how you group the given numbers to add.

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

=> 19 + (11 + 37) or (19 + 11) + 37

=> 19 + (48) or (30) + 37

=> 67 or 67