Partial sums addition

Partial Sums Addition is a method of adding numbers by breaking them into parts, adding the parts separately, and then combining the results.

The first step is to break each number into its place values (hundreds, tens, and ones).

You add the tens from each number together.

You add the ones from each number together.

You combine the sums of the place values to get the final answer.

First, add 70 + 20 = 90, then add 4 + 4 = 8. Finally, combine 90 + 8 = 98.

First, add 10 + 10 = 20, then add 2 + 3 = 5. Finally, combine 20 + 5 = 25.

First, add 10 + 80 = 90, then add 6 + 1 = 7. Finally, combine 90 + 7 = 97.

First, add 20 + 10 = 30, then add 3 + 3 = 6. Finally, combine 30 + 6 = 36.

First, add 40 + 10 = 50, then add 5 + 5 = 10. Finally, combine 50 + 10 = 60.