Add two two-digit numbers – with regrouping

key notes :

🔢 What is regrouping?

• Regrouping means carrying a number to the next place value.
• When the ones total is 10 or more, we regroup.
  👉 Example: 8 + 7 = 15 → write 5 in ones, carry 1 to tens.

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🧮 Steps to Add Two Two-Digit Numbers With Regrouping 💡

✏️ Step 1: Line up the numbers

• Write the numbers one under the other.
• Make sure tens under tens, ones under ones.

🔟 Step 2: Add the ones

Add the ones digits first.

If the sum is 10 or more, regroup by:

• Writing the ones digit
• Carrying the tens digit to the tens place.

💛 Step 3: Add the tens

• Add the tens digits.
• Don’t forget to add the regrouped (carried) number!

🎉 Step 4: Write the final answer

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🌟 Example

   27  
+ 48  
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1️⃣ Add ones → 7 + 8 = 15 → write 5, carry 1
2️⃣ Add tens → 2 + 4 + 1 (carried) = 7
✅ Answer = 75

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💡 Important Tips

• Always start adding from the ones place 👉 1️⃣
• Double-check your carried number ✔️
• Regroup ONLY when the ones are 10 or more 🔟➡️
• Write numbers neatly to avoid mistakes ✍️🙂

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🎈 Why regrouping is needed?

• Numbers in the ones place cannot be more than 9.
• So extra value moves to the tens place.
  👉 This keeps our place value system correct! 🎯

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🧠 Real-life example

🎁 You have 28 candies.
Your friend gives you 35 more.
You add 8 + 5 = 13 → regroup → carry 1
Then add tens → 2 + 3 + 1 = 6
🍬 Total candies = 63

Learn with an example

Let’s practice!🖊️