SaiBook.us Subtraction

Lesson Example Discussion Quiz: Class Homework

Example

Title: Subtraction

Grade: 1-a Lesson: S2-L7

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

Examples:

Subtraction 72 - 9

Step 1a

Subtraction 72 from 9

Arrange the numbers vertically. Subtract one’s place digits 2 – 9. we have to take borrowing from ten’s place. Here the value is now 12. subtract 12 - 9 = 3.write 3 in one’s column.

$1a$

Explanation: Start subtracting with the digit at one’s place i.e., 2 - 9 We take a borrow from ten’s place since 2 < 9. Here the value is 12. subtract 12 - 9 = 3. write the 3 in one’s column.

Step 1b

Subtract ten’s place digits 6 - 0 = 6.write 6 in ten’s column.

$1b$

Explanation: Move to the ten’s place i.e., 6 - 0 = 6. Write 6 in the ten’s place.

Step 1c

Thus 72 - 9 = 63.

$1c$

Explanation: Therefore, the difference between the two given numbers is: 72 - 9 = 63.