Here we will show you step-by-step how to calculate 28 minus 7 using the long subtraction method.
Before we continue, note that 28 is called the minuend and 7 is called the subtrahend.
To solve the problem 28 minus 7 using long subtraction, we first put the largest number on top and the smallest number at the bottom like this:
| 2 | 8 | |||||||
| - | 0 | 7 | ||||||
Then you subtract the ones digits (8 - 7 = 1) like this:
| 2 | 8 | |||||||
| - | 0 | 7 | ||||||
| 1 |
Next you subtract the tens digits (2 - 0 = 2) like this:
| 2 | 8 | |||||||
| - | 0 | 7 | ||||||
| 2 | 1 |
And that's it. The problem with the answer is displayed below:
28 - 7 = 21
Long Subtraction Calculator
Here you can enter another subtraction problem for us to explain and solve using the long subtraction method: