Add 36.4, 273.06, 9.397 and 68.

Options

A. 86.857
B. 3857
C. 386.857
D. none of these

Answer

To solve the problem of adding the numbers 36.4, 273.06, 9.397, and 68, we will follow these steps:

### Step-by-Step Solution:

1. **Write the Numbers in Vertical Order**:
Align the numbers by their decimal points. This helps in adding them accurately.
```
36.400
273.060
9.397
68.000
```

2. **Add the Numbers Column by Column**:
Start adding from the rightmost column (thousandths place) and move to the left.

- **Thousandths Place**:
- 0 + 0 + 7 + 0 = 7
- **Hundredths Place**:
- 0 + 6 + 9 + 0 = 15 (write down 5 and carry over 1)
- **Tenths Place**:
- 4 + 0 + 3 + 0 + 1 (carry) = 8
- **Units Place**:
- 6 + 3 + 9 + 8 = 26 (write down 6 and carry over 2)
- **Tens Place**:
- 2 + 2 (carry) = 4

3. **Combine the Results**:
Now, combine all the results from the addition:
```
386.857
```

### Final Answer:
The sum of 36.4, 273.06, 9.397, and 68 is **386.857**.