8456 + 3891 + 4560 = ?

Answer

To solve the problem \( 8456 + 3891 + 4560 \), we will add the three numbers step by step.

### Step 1: Write the numbers vertically
```
8456
+ 3891
+ 4560
```

### Step 2: Add the numbers column by column starting from the rightmost column (units place)
- **Units place:** \( 6 + 1 + 0 = 7 \)

### Step 3: Move to the next column (tens place)
- **Tens place:** \( 5 + 9 + 6 = 20 \)
- Write down 0 and carry over 2.

### Step 4: Move to the next column (hundreds place)
- **Hundreds place:** \( 4 + 8 + 5 = 17 \)
- Add the carry-over 2: \( 17 + 2 = 19 \)
- Write down 9 and carry over 1.

### Step 5: Move to the next column (thousands place)
- **Thousands place:** \( 8 + 3 + 4 = 15 \)
- Add the carry-over 1: \( 15 + 1 = 16 \)
- Write down 6 and carry over 1.

### Step 6: Since there is a carry-over, we write it down
- Write down the carry-over 1 in the next left column.

### Final Calculation
Putting all the results together, we have:
```
8456
+ 3891
+ 4560
-------
16907
```

Thus, the final answer is \( 16907 \).

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