Solved examples: Adding 2-digit and 3-digit numbers with regrouping for kids

🔢 Quick Study Guide

• ➕ Regrouping (Carrying): Regrouping is when you move a 'ten' or 'hundred' from one column to the next when adding numbers. It's like trading smaller units for bigger ones!
• 📝 Adding 2-Digit Numbers: Start by adding the digits in the ones place. If the sum is 10 or more, regroup the tens to the tens place. Then, add the digits in the tens place, including any regrouped tens.
• 💯 Adding 3-Digit Numbers: Start by adding the digits in the ones place. Regroup if needed. Then, add the digits in the tens place, including any regrouped tens. Regroup again if needed. Finally, add the digits in the hundreds place, including any regrouped hundreds.
• 💡 Example 1 (2-Digit): $37 + 25$. Add $7 + 5 = 12$. Regroup the $10$ from $12$ to the tens place. Add $3 + 2 + 1 = 6$. So, $37 + 25 = 62$.
• 📚 Example 2 (3-Digit): $146 + 237$. Add $6 + 7 = 13$. Regroup the $10$ from $13$. Add $4 + 3 + 1 = 8$. Add $1 + 2 = 3$. So, $146 + 237 = 383$.

🧮 Practice Quiz

1. What is $45 + 28$?
   1. 63
   2. 73
   3. 62
   4. 72
2. What is $123 + 45$?
   1. 158
   2. 168
   3. 178
   4. 188
3. What is $26 + 37$?
   1. 53
   2. 63
   3. 52
   4. 64
4. What is $234 + 156$?
   1. 380
   2. 390
   3. 385
   4. 395
5. What is $58 + 14$?
   1. 62
   2. 72
   3. 61
   4. 73
6. What is $315 + 245$?
   1. 550
   2. 560
   3. 570
   4. 580
7. What is $82 + 49$?
   1. 121
   2. 131
   3. 130
   4. 141