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Lakshmi rewrote 47 + 38 + 53 as 47 + 53 + 38 and then added.
Which two properties did she use, and what is the sum?

Class 6Properties of Whole NumbersWhole Numbers
  • ACommutative and associative; 138
  • BOnly distributive; 138
  • COnly commutative; 128
  • DAssociative and identity; 138

Step-by-Step Solution

She reordered (commutative) and regrouped (associative): (47 + 53) + 38 = 100 + 38 = 138.
Answer: A) Commutative and associative; 138

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