30.94 + 0.7 = ?

Options

A. 44.2
B. 4.42
C. 442
D. 0.442

Answer

To solve the problem \(30.94 + 0.7\), we will follow these steps:

### Step 1: Align the numbers by the decimal point
We write the numbers one under the other, aligning the decimal points:

```
30.94
+ 0.70
```

### Step 2: Add the numbers starting from the rightmost column
We will add the numbers column by column, starting from the rightmost side.

- **Rightmost column (hundredths place)**:
\(4 + 0 = 4\)

- **Next column (tenths place)**:
\(9 + 7 = 16\)
We write down \(6\) and carry over \(1\) to the next column.

- **Next column (units place)**:
\(0 + 0 + 1 (carry) = 1\)

- **Next column (tens place)**:
\(3 + 0 = 3\)

### Step 3: Write down the result
Now we can write down the result of our addition:

```
30.94
+ 0.70
--------
31.64
```

Thus, \(30.94 + 0.7 = 31.64\).