https://file.aiquickdraw.com/mathbot/file/173015333688483fyoabm.jpg

I'll solve each of the subtraction problems from the worksheet.

### Solutions:
1. \( 321 - 34 \)
   \[
   321 - 34 = 287
   \]

2. \( 321 - 45 \)
   \[
   321 - 45 = 276
   \]

3. \( 321 - 156 \)
   \[
   321 - 156 = 165
   \]

4. \( 321 - 175 \)
   \[
   321 - 175 = 146
   \]

5. \( 502 - 135 \)
   \[
   502 - 135 = 367
   \]

6. \( 502 - 145 \)
   \[
   502 - 145 = 357
   \]

7. \( 502 - 246 \)
   \[
   502 - 246 = 256
   \]

8. \( 502 - 257 \)
   \[
   502 - 257 = 245
   \]

Let me know if you'd like further explanations or if you have any questions.

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### Related Questions
1. How do you handle borrowing in multi-digit subtraction?
2. What are some strategies for checking subtraction answers for accuracy?
3. How does subtraction differ when numbers are close in value?
4. How can mental math aid in simpler subtraction problems?
5. What methods can help improve speed in solving subtraction problems?

### Tip
Double-checking subtraction results by adding the difference to the subtracted number can help confirm accuracy.

Solve each of the subtraction problems on the worksheet.

Practice solving three-digit subtraction problems involving borrowing. This worksheet includes exercises like 321 - 34 and 502 - 257, suitable for students in Grades 2-4.

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