Bài 13: Addition of three digit number

Starry, yesterday we were counted money from your BG bank.

There were 575 rupees, here you can add 120 rupees more.

What are you thinking Starry?

Oh, you are try a list you done it a mount in your BG bank.

Starry, the addition of three digit numbers is the same addition of two digit numbers.

Come! Let’s add 575 rupees and 120 rupees.

First, we shall arrange the numbers in the proper columns.

Let’s write the digit 5 in the hundred column, 7 in the tens column and 5 in the units column,

from the number 120, digit 1 is written below 5 in the hundreds column, digit 2 is written below 7 in the tens column,

and 0 is written below 5 in the units column.

What should we do now?

Yes, now we shall add the digit in the units place,

5 + 0 =5, next plus are the digit in the tens place, 7 tens plus 2 tens equal 9 tens,

5 hundreds plus 1 hundred equals to 6 hundreds.

So Starry, now you have total of 695 rupees.

Starry, come! Let’s solve of you more example of adding three digit numbers. Add 532 + 216.

The first step, it’s to arrange the number vertically and proper column and solve.

Now Starry, from which column should we start adding?

Yes, start adding the units place first. 2 units plus 6 units equals to 8 units.

Now add the tens place digit, 3 tens plus 1 tens equals 4 tens.

Next, 5 hundreds plus 2 hundreds equal 7 hundreds.

What is the final answer Starry? Yes, 532 plus 216 equals 748.

Now Starry can you just suggest which two numbers should add?

Ok, let’s find 415 and 263. Starry see!! I have arranged the numbers in proper column.

Now let’s add the units place digit, 5 units plus 3 units equal 8 units.

Now let’s add the tens place digit, 1 tens plus 6 tens equals to 7 tens,

finally we add the hundreds place digit, 4 hundreds plus 2 hundreds equals to 6 hundreds.

So 415 plus 263 equal 678.

So Starry, even if the number are big, they can be easily if they are arranged in proper column.

In the next example, the numbers have already been arranged in the proper column, just fill the empty boxes.

In the first example add 806 and 123. Tell me the answer Starry?

Yes, 6 units plus 3 units equal 9 units, 0 tens plus 2 tens equal 2 tens,

and 8 hundreds plus 1 hundred equals 9 units.

So Starry 806 plus 123 equal 929. Fill in the boxes in the given example.

253 plus 520, are you solve this one Starry?

Yes, 3 units plus 0 units easy equal to 3 units, 5 tens plus 2 tens equal 7 tens,

2 hundreds plus 5 hundreds equasl to7 hundred.

So Starry 253 plus 520 equal 773. Wasn’t this addition simple Starry?

Ok keep practicing!