### Home > CC2MN > Chapter 2 > Lesson 2.2.5 > Problem2-93

2-93.

Do you think it matters what order you follow when performing math operations? Investigate this by doing the following problems.

Be sure to show your work!

1. For the problem $9+2(3)$ do you get the same final answer if you add first as you do if you multiply first?

Try taking a guess before you answer the question. The answer may surprise you!

The final answers are not the same.

2. For the problem $(2·4)·7$ do you get the same final answer if you start with the first two numbers as you do if you start with the last two numbers?

Take your time and make sure you multiply in two different ways!

The final answers are the same. When you multiply $2·4$ first, the answer is $56$. When you multiply $4·7$ first, the answer is still $56$.