CPM Homework Help : MC1 Problem 6-30

Molly and Nancy disagree about the value of the expression $2+3·4$ . Molly thinks it is $20$ , and Nancy thinks it is $14$ . How could each girl have calculated her answer? Who is correct?

Hint:

One girl calculated $(2+3)(4)$ and the other calculated $2+(3)(4)$ .
Evaluate each expression to find out who did which one.
The girl who correctly followed the Order of Operations arrived at the correct answer.

Answer:

Nancy is right.