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Regrouping with Base 10
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Regrouping with Base 10
🧮 Part 1: Addition with Regrouping
1. Solve 147 + 286 using base 10 blocks. Show your regrouping steps:
2. Calculate 259 + 175. Remember to regroup when needed:
3. Which of these addition problems requires regrouping?
123 + 234
146 + 127
251 + 308
189 + 245
4. Sarah has 168 marbles. Her friend gives her 295 more marbles. How many marbles does she have altogether?
➖ Part 2: Subtraction with Regrouping
5. Solve 462 - 175 using base 10 blocks. Show your regrouping steps:
6. Calculate 534 - 268. Remember to regroup when needed:
7. When do you need to regroup in subtraction?
When the top digit is smaller than the bottom digit
When the top digit is larger than the bottom digit
When both digits are the same
When adding numbers together
8. A shop has 425 apples. They sell 189 apples during the day. How many apples are left?
🤔 Part 3: Explain Your Thinking
9. Explain in your own words what "regrouping" means when we add or subtract numbers:
10. Look at this problem: 300 - 156. Explain why you need to regroup and describe the steps:
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