Here we will show you step-by-step how to calculate 15 plus 40 (15 + 40) using the Long Addition Method. We start by setting up our math problem as follows:
| 1 | 5 | |||||||
| + | 4 | 0 | ||||||
The next step is to add the ones digits together (5 + 0 = 5) like this:
| 1 | 5 | |||||||
| + | 4 | 0 | ||||||
| 5 |
Then in our final step, we add the tens digits together (1 + 4 = 5) like this:
| 1 | 5 | |||||||
| + | 4 | 0 | ||||||
| 5 | 5 |
And that is how you solve 15 plus 40 using the Long Addition Method! The answer is displayed mathematically below:
15 + 40 = 55
Long Addition Calculator
Here you can enter another addition problem for us to explain and solve using the Long Addition Method: