Add the decimals:
23.7, 106.94, 68.9 and 29.5

Answer

To solve the problem of adding the decimals 23.7, 106.94, 68.9, and 29.5, we will follow these steps:

### Step 1: Align the Decimals
First, we need to write the numbers in a column format, aligning the decimal points:

```
23.70
106.94
68.90
29.50
```

### Step 2: Fill in Zeros
Next, we can fill in zeros for the numbers that do not have two decimal places to make them uniform:

```
23.70
106.94
68.90
29.50
```

### Step 3: Add the Numbers
Now, we will add the numbers column by column, starting from the rightmost column (the hundredths place):

1. **Hundredths place**: 0 + 4 + 0 + 0 = 4
2. **Tenths place**: 7 + 9 + 9 + 5 = 30 (write down 0 and carry over 3)
3. **Units place**: 3 (carry over) + 3 + 6 + 0 + 2 = 14 (write down 4 and carry over 1)
4. **Tens place**: 1 (carry over) + 2 + 0 + 0 + 1 = 4
5. **Hundreds place**: 1 (from 106.94)

Putting it all together, we have:

```
23.70
106.94
68.90
29.50
________
229.04
```

### Final Answer
The sum of the decimals 23.7, 106.94, 68.9, and 29.5 is **229.04**.

---