Choose a Method

You can use different methods to add.

You can use mental math or paper and pencil.

Find the sum. Tell which method you used.

Think:

There are 3 addends. That is hard to keep track of using mental math.
I could use paper and pencil, but there are 3 addends and I need to regroup more than one time.

Read the explanation below to learn more about different methods to add.

Practice Time! Answer the exercise below about using different methods to add.