Question

Write the problem vertically in your notebook then so
78.2-43.71

Answer 1

To solve the problem \( 78.2 - 43.71 \) vertically, you can align the numbers by their decimal points and perform the subtraction as follows:

```
78.20
- 43.71
--------
```

Now, you can subtract starting from the right:

1. In the hundredths place: \( 0 - 1 \) (we need to borrow)
- Borrow 1 from the tenths place (making it 1), so now we have \( 10 - 1 = 9 \).

2. In the tenths place: \( 1 - 7 \) (we need to borrow)
- Borrow 1 from the units place (making it 7), so now it becomes \( 11 - 7 = 4 \).

3. In the units place: \( 7 - 3 = 4 \).

4. In the tens place: \( 7 - 4 = 3 \).

So we write down the results from each column:

```
78.20
- 43.71
--------
34.49
```

Thus, \( 78.2 - 43.71 = 34.49 \).