Add :
4.5,16.024,7.99

Answer

To solve the problem of adding the numbers 4.5, 16.024, and 7.99, we will follow these steps:

### Step 1: Write down the numbers
We start by writing down the numbers we need to add:
- 4.5
- 16.024
- 7.99

### Step 2: Equalize the number of decimal places
Next, we need to ensure that all numbers have the same number of decimal places. The number with the most decimal places is 16.024, which has three decimal places. We will adjust the other numbers accordingly:
- 4.5 becomes 4.500 (adding two zeros)
- 16.024 remains 16.024
- 7.99 becomes 7.990 (adding one zero)

Now we have:
- 4.500
- 16.024
- 7.990

### Step 3: Align the numbers for addition
We will write the numbers one below the other, aligning them by the decimal point:

```
4.500
+16.024
+ 7.990
```

### Step 4: Add the numbers
Now we will add the numbers column by column, starting from the rightmost column (thousandths place):

1. **Thousandths place**: 0 + 4 + 0 = 4
2. **Hundredths place**: 0 + 2 + 9 = 11 (write down 1 and carry over 1)
3. **Tenths place**: 5 + 0 + 9 + 1 (carry) = 15 (write down 5 and carry over 1)
4. **Units place**: 4 + 6 + 7 + 1 (carry) = 18 (write down 8 and carry over 1)
5. **Tens place**: 1 (carry) + 1 = 2

Putting it all together, we get:
```
4.500
+16.024
+ 7.990
--------
28.514
```

### Final Answer
The sum of 4.5, 16.024, and 7.99 is **28.514**.

---