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Writing 3 plus 3 plus 3 as 3 times 3 shows that multiplication is repeated:

ARounding
BGrouping
CCounting
DAddition
Answer & Solution
Correct answer: D. Addition
1. The same number is added again and again. 2. A shorter way to write that is multiplication. 3. So multiplication is repeated addition. _Source: OpenStax Prealgebra, Chapter 1, Whole Numbers._
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