Online Quiz: Adding 2-Digit and 1-Digit Numbers with Regrouping (Grade 2)

📚 Quick Study Guide

• 🔢 Regrouping: Also known as carrying, it's when you move a 'ten' from the ones column to the tens column because the sum in the ones column is greater than 9.
• ➕ Addition Basics: Always start by adding the ones column first. Then, add the tens column.
• ✍️ Example: Let's add 17 + 5. 7 + 5 = 12. We write down '2' in the ones column and carry-over '1' to the tens column. Then, 1 (carried over) + 1 = 2 in the tens column. So, 17 + 5 = 22.
• 💡 Tips: Use your fingers or draw dots to help you add smaller numbers. Practice makes perfect!
• 📝 Formula: If ones digit sum > 9, then $10 + (ones\;digit\;sum - 10)$

✏️ Practice Quiz

1. What is 28 + 4?
1. 32
2. 22
3. 31
2. What is 35 + 7?
1. 41
2. 42
3. 43
3. What is 46 + 5?
1. 50
2. 51
3. 52
4. What is 59 + 3?
1. 61
2. 62
3. 52
5. What is 67 + 8?
1. 74
2. 75
3. 76
6. What is 74 + 9?
1. 82
2. 83
3. 84
7. What is 83 + 7?
1. 80
2. 90
3. 91