The image shows a subtraction activity involving 3-digit numbers with regrouping. The task involves solving subtraction problems and marking the answers on a game board. Below is an explanation of how to solve such problems, using one of the examples from the image.
Example Problem:
Let's take one of the subtraction problems from the image:
989 - 464.
Step-by-Step Solution:
1.
Write the problem vertically:
```
989
- 464
```
2.
Subtract the ones place:
- Ones place: \( 9 - 4 = 5 \)
- Write 5 in the ones place.
```
989
- 464
---
5
```
3.
Subtract the tens place:
- Tens place: \( 8 - 6 = 2 \)
- Write 2 in the tens place.
```
989
- 464
---
25
```
4.
Subtract the hundreds place:
- Hundreds place: \( 9 - 4 = 5 \)
- Write 5 in the hundreds place.
```
989
- 464
---
525
```
So, the answer to \( 989 - 464 \) is
525.
General Steps for Subtraction with Regrouping:
If you encounter a situation where the top digit is smaller than the bottom digit in any column, you need to regroup (borrow) from the next higher place value. Here’s how it works:
1.
Identify the column where regrouping is needed.
2.
Borrow 1 from the next higher place value.
3.
Add 10 to the current place value (since you borrowed 1).
4.
Subtract as usual.
Example with Regrouping:
Let’s solve another problem from the image:
764 - 658.
1.
Write the problem vertically:
```
764
- 658
```
2.
Subtract the ones place:
- Ones place: \( 4 - 8 \) → Since 4 is less than 8, borrow 1 from the tens place.
- After borrowing, the ones place becomes \( 14 - 8 = 6 \).
- Write 6 in the ones place.
```
764
- 658
---
6
```
3.
Subtract the tens place:
- Tens place: After borrowing, the tens place is now \( 5 \) (since we borrowed 1 from 6).
- \( 5 - 5 = 0 \)
- Write 0 in the tens place.
```
764
- 658
---
06
```
4.
Subtract the hundreds place:
- Hundreds place: \( 7 - 6 = 1 \)
- Write 1 in the hundreds place.
```
764
- 658
---
106
```
So, the answer to \( 764 - 658 \) is
106.
Conclusion:
The game board requires solving similar subtraction problems and marking the correct answers. By following the steps above, you can solve any 3-digit subtraction problem with or without regrouping.
If you have specific problems you'd like me to solve, feel free to ask!
Final Answer:
\boxed{525 \text{ and } 106} (for the examples provided).
Parent Tip: Review the logic above to help your child master the concept of interactive 3 digit subtraction.