SaiBook.us Addition

Example

Title: Addition

Grade: 2-a Lesson: S2-L7

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

Examples:

Add 450 and 70

Step 1a

Add 450 + 70

Arrange the numbers according to their place values.

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

$1a$

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

Step 1b

Now we add the tens digit i.e., 7 + 5 = 12.

Write down 2 in the tens column and carry 1 to the hundreds column.

$1b$

Explanation: Add the digits in the tens column (7 + 5 = 12).Write down 2 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, 450 + 70 = 520.

$1c$

Explanation: Add the digits in hundreds column (4 + 1 = 5). Therefore the sum of 450 and 70 is 520.