Example

Title: Multiplications

Grade: 4-a Lesson: S3-L1

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

Examples:

Step: 1a

Multiply 108 by 3.

  • Arrange the numbers vertically.

  • First, multiply the digit at the one’s place by 3, i.e., 8 × 3 = 24.

  • Write 4 in the one’s column and carry over 2 to the tens column.

1a

.

Explanation: In this step, multiply the digit in the one’s place by 3. For instance, if the digit is 8, multiply it by 3, resulting in 24. Write down 4 in the one’s column and carry over 2 to the tens column.

Step: 1b

  • Now multiply the digit at the ten’s place by 3, i.e., 0 × 3 = 0 tens.

  • Now, 0 + 2 (carry over) = 2 ten’s.Write 2 at the hundreds place.

1b

.

Explanation: When 3 is multiplied by 0, we get 0. Now, we need to add the carry-over 2 to 0 and get 2.

Step: 1c

  • Now, multiply the number in the hundreds place by 3, i.e.,1 × 3 = 3 hundred’s.

  • Therefore, 108 × 3 = 324.

1c

.

Explanation: In this step, finally, multiply 3 by the digit in the hundred’s place (1 × 3 = 3) and write 3 in the hundred’s place. Hence, 108 × 3 = 324.


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