🔢 Part 1: Subtraction with Regrouping Practice

1. Solve these subtraction problems. Show your working in the boxes below.

a) 423 - 158 = _______

b) 562 - 287 = _______

c) 734 - 169 = _______

d) 845 - 378 = _______

🧠 Part 2: Understanding Regrouping

2. Look at this subtraction problem: 521 - 147. Circle the correct answer:

We need to regroup from the tens place to the ones place

We need to regroup from the hundreds place to the tens place

We don't need to regroup at all

We need to regroup twice

3. When we regroup 1 ten, how many ones do we get?

4. Fill in the blanks using the words: hundreds, tens, ones, regroup

In the problem 632 - 185, we cannot subtract 5 from 2 in the _______ place. So we must _______ one _______ to make 12 _______. Now we can subtract 5 from 12.

✅ Part 3: Checking Your Work

5. Solve this problem and then check your answer using addition:

456 - 189 = _______

Check: _______ + 189 = 456

6. Estimate first, then solve. Circle if your answer is reasonable:

672 - 298

Estimate: 670 - 300 = _______

Exact answer: 672 - 298 = _______

My answer is reasonable (close to my estimate)

My answer is not reasonable (I need to check my work)

📝 Part 4: Word Problems

7. The school library had 524 books. They gave away 167 books to other schools. How many books does the library have left?

Answer: The library has _______ books left.

8. A cinema has 635 seats. 248 people are watching the movie. How many empty seats are there?

Answer: There are _______ empty seats.

9. Sarah saved $423. She spent $156 on a new bike. How much money does she have left?

Answer: Sarah has $_______ left.

🎯 Part 5: Challenge Questions

10. Which of these problems will need regrouping? Check all that apply:

456 - 123

732 - 148

589 - 267

674 - 321

11. Explain in your own words why we need to regroup when doing subtraction:

12. Create your own subtraction problem that needs regrouping once, then solve it:

My problem: _______ - _______ = _______

Subtraction with Regrouping

Subtraction with Regrouping

🔢 Part 1: Subtraction with Regrouping Practice

🧠 Part 2: Understanding Regrouping

✅ Part 3: Checking Your Work

📝 Part 4: Word Problems

🎯 Part 5: Challenge Questions

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