SaiBook.us Subtraction

Lesson Example Discussion Quiz: Class Homework

Example

Title: Subtraction

Grade: 3-a Lesson: S1-L7

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

Examples:

Subtract 647 - 82

Step 1a

Subtract 647 - 82

Arrange the numbers vertically. Subtract ones 7 - 2 = 5. Write 2 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 4 - 8. We have to take the borrowing from hundreds place because 4 < 8 Now the digit 14 - 8 = 6. Write 6 in tens column.

$1b$

Explanation: Move to the tens place i.e., 14 - 8 = 6. Write 6 in the tens place.

Step 1c

Subtract the numbers under the hundreds column 5 - 0 = 5. Write 5 in the hundreds column.

$1c$

Explanation: Now subtract hundreds column i.e., 5 - 0 = 5 and write 5 in the hundreds column.

Step 1d

Hence, the difference between the given numbers is 565.

$1d$

Explanation: Thus 647 - 82 = 565.