Question

Which choice shows (50+30) +40 correctly rewritten using the associative property and then correctly simplified?

Answer 1

The associative property allows you to group numbers differently when performing addition.

Starting with the expression \((50 + 30) + 40\), we can use the associative property to regroup the numbers. One possible way to rewrite this using the associative property is:

\[
50 + (30 + 40)
\]

Now, we can simplify the expression:

1. Calculate \(30 + 40\):
\[
30 + 40 = 70
\]

2. Now substitute this back into the expression:
\[
50 + 70
\]

3. Finally, add \(50 + 70\):
\[
50 + 70 = 120
\]

So, the expression \((50 + 30) + 40\) rewritten using the associative property and correctly simplified results in \(120\).