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E:\Working\Focus_Learning\Math_Genius_2_(09-10-2023)\Open_Files\Chap_04
\ 17-Nov-2023 Bharat Arora Proof-6 Reader’s Sign _______________________ Date __________

Addition of 3-digit numBers with regrouping

Nobita: There is a charity event in our

school for flood-affected people. I have
collected 265 clothes including shirts

and trousers from my area.

Shizuka: I have also collected

398 dresses from my area.

doraemon: You both

collected 663 number of

clothes.

Nobita: How do you calculate it Doraemon?

doraemon: To know the total number of clothes, we need to add 265 and 398. We

can do this step by step as shown here.

Step 1. Add the ones and regroup. H t O

5 + 8 = 13 ones 1
2 6 5
= 1 ten + 3 ones + 3 9 8

So, write 3 at the ones column and carry over 1 3
to the tens column.

Step 2. Add the tens and regroup. Step 3. Add the hundreds.

1 + 6 + 9 = 16 tens 1 + 2 + 3 = 6 hundreds
= 1 hundred + 6 tens So, write 6 at the hundreds

Now, write 6 at the tens column column.

and carry over 1 to the hundreds H t O
column. 1 1
H t O 2 6 5

1 1 + 3 9 8
2 6 5 6 6 3
+ 3 9 8

6 3

Thus, 265 + 398 = 663

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