Write each of the as a decimal number:
`200+60+5+(3)/(10)`

Options

A. 265.3
B. 275.3
C. 285.3
D. 295.3

Answer

To convert the expression \(200 + 60 + 5 + \frac{3}{10}\) into a decimal number, follow these steps:

### Step 1: Add the whole numbers
First, we will add the whole numbers together:
\[ 200 + 60 + 5 \]
Calculating this:
\[ 200 + 60 = 260 \]
\[ 260 + 5 = 265 \]

### Step 2: Convert the fraction to a decimal
Next, we convert the fraction \(\frac{3}{10}\) into a decimal.
\[ \frac{3}{10} = 0.3 \]

### Step 3: Combine the whole number and the decimal
Now, we will add the whole number \(265\) and the decimal \(0.3\):
\[ 265 + 0.3 \]

To do this, we can write \(265\) as \(265.0\) for easier addition:
\[ 265.0 + 0.3 \]
Aligning the numbers:
```
265.0
+ 0.3
--------
265.3
```

### Final Answer
Thus, the final answer is:
\[ \boxed{265.3} \]

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