Answer :

To solve the problem of subtracting 120 from 11,221, let's break it down into simple steps:

1. Write down the numbers: Start by writing the larger number (11,221) above the smaller number (120) in a column format, aligning the digits by place value (units, tens, hundreds, etc.).

```
11,221
- 120
```

2. Subtract the units (ones) place: Look at the rightmost digits, which are 1 and 0. Subtract 0 from 1 to get 1.

3. Subtract the tens place: Move to the next column to the left. Subtract 2 (in the tens place of 120) from 2 (in the tens place of 11,221), which equals 0.

4. Subtract the hundreds place: Move to the hundreds place. Subtract 1 (in the hundreds place of 120) from 2 (in the hundreds place of 11,221), which equals 1.

5. Account for the thousands place: Since there is no digit in the thousands place of the number you are subtracting (120), the thousands and ten-thousands places in 11,221 remain unchanged (1 and 1 respectively).

6. Combine the results: Putting it all together, you get 11,101.

Therefore, 11,221 minus 120 equals 11,101.