SaiBook.us Addition

Example

Title: Addition

Grade: 2-a Lesson: S2-L8

Explanation: The best way to understand addition is by looking at some examples.Take turns and read each example for easy understanding.

Examples:

Add 490 and 99

Step 1a

Add 490 + 99

Aarrange the numbers according to their place values.

Start adding the numbers from ones to right i.e., 0 + 9 = 9.

$1a$

Explanation: Add the digits in the ones place (0 + 9 = 9). Write down 9 in the ones column.

Step 1b

Now we add the tens digit i.e., 9 + 9 = 18.

Write down 8 in the tens column and carry 1 to the hundreds column.

$1b$

Explanation: Add the digits in the tens column (9 + 9 = 18).Write down 8 in the tens column and carry 1 to the hundreds column.

Step 1c

After this ,add the digits in hundreds column i.e., 4 + 1 = 5. After adding both the columns we get, 490 + 99 = 589.

$1c$

Explanation: Add the digits in hundreds column (4 + 1 = 5). Therefore the sum of 490 and 99 is 589.