Question

Using Only Digits to Subtract with Regrouping
Subtract: 131 - 12
Wite the numbers vertically.
• Line these numbers up by_____

• Regroup a ten to make more
Our answer is _____

Answer 1

To subtract 131 - 12 using only digits and regrouping, we can follow these steps:

1. **Write the numbers vertically**:
```
131
- 12
```

2. **Line these numbers up by their place values**:
- Align the numbers according to their ones, tens, and hundreds places.

3. **Regroup a ten to make more**:
- We cannot subtract 2 from 1 in the ones place. So, we need to regroup:
- Borrow 1 from the tens place (which is 3) and convert it into ten for the ones place. This transforms the 1 in the ones place into 11 (1 + 10), and the 3 in the tens place becomes 2.

Now the numbers look like this:
```
12 (this is now 11)
120 (this is now 120 - we changed the 3)
1
----
```

4. **Subtract**:
- Now, we can subtract:
- **In the ones place**: 11 - 2 = 9
- **In the tens place**: 2 - 1 = 1
- **In the hundreds place**: 1 - 0 = 1

Thus, the result is:
```
131
- 12
-----
119
```

So, our answer is **119**.