SaiBook.us Subtraction

Example

Title: Subtraction

Grade: 3-a Lesson: S1-L3

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

Examples:

Subtract 297 - 54

Step 1a

Subtract 297 - 54

Arrange the numbers vertically. Subtract ones 7 - 2= 5. Write 5 in ones column.

$1a$

Explanation: Start with the digit at ones place i.e., 7 - 2 = 5. Write 5 in ones column.

Step 1b

Subtract tens and write in the tens place 9 - 4 = 5. Here write 5 in tens column

$1b$

Explanation: Move to the tens place i.e., 9 - 4 = 5. Write 5 in the tens place.

Step 1c

Subtract the numbers under the hundreds column 2 - 0 = 2. Write 2 in the hundreds column.

$1c$

Explanation: Now subtract hundreds column i.e., 2 - 0 = 2 and write 2 in the hundreds column.

Step 1d

Hence, the difference between the given numbers is 243.

$1d$

Explanation: Thus 297 - 54 = 243.