32.1068-2.009 is equal to

Options

A. 30.0978
B. 300.978
C. 30.00978
D. 30.978

Answer

To solve the problem \( 32.1068 - 2.009 \), we will follow these steps:

### Step 1: Align the numbers by the decimal point
We will write the numbers one under the other, aligning them at the decimal point. To make the subtraction easier, we will add zeros to the second number to match the number of decimal places in the first number.

```
32.1068
- 2.0090
```

### Step 2: Subtract the numbers column by column
Now we will subtract starting from the rightmost digit.

1. **Thousandths place**: \( 8 - 0 = 8 \)
2. **Hundredths place**: \( 6 - 9 \): Since 6 is less than 9, we need to borrow 1 from the tenths place. This makes the 6 become 16 (after borrowing) and the tenths place decreases by 1.
- Now, we have \( 16 - 9 = 7 \)
3. **Tenths place**: After borrowing, we have \( 0 - 0 = 0 \)
4. **Units place**: \( 2 - 2 = 0 \)
5. **Tens place**: \( 3 - 0 = 3 \)

Putting it all together, we get:

```
32.1068
- 2.0090
-----------
30.0978
```

### Final Answer
Thus, \( 32.1068 - 2.009 = 30.0978 \).

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