Here we will show you step-by-step how to calculate 77 plus 80 (77 + 80) using the Long Addition Method. We start by setting up our math problem as follows:
| 7 | 7 | |||||||
| + | 8 | 0 | ||||||
The next step is to add the ones digits together (7 + 0 = 7) like this:
| 7 | 7 | |||||||
| + | 8 | 0 | ||||||
| 7 |
Then in our final step, we add the tens digits together (7 + 8 = 15) like this:
| 7 | 7 | |||||||
| + | 8 | 0 | ||||||
| 1 | 5 | 7 |
And that is how you solve 77 plus 80 using the Long Addition Method! The answer is displayed mathematically below:
77 + 80 = 157
Long Addition Calculator
Here you can enter another addition problem for us to explain and solve using the Long Addition Method: