SaiBook.us Multiplication

Lesson Example Discussion Quiz: Class Homework

Example

Title: Multiplications

Grade: 3-a Lesson: S4-L5

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 121 by 1.

Arrange the numbers vertically.
Multiply the digit at the one’s place by 1, i.e., 1 × 1 = 1.
Write 1 in the one’s place.

$1a$

Explanation: In this step, arrange the numbers according to their places. Multiply the digit in the one’s place by 1, i.e., 1 × 1 = 1. Write 1 in the one’s place.

Step: 1b

Multiply the digit in the tens place by 2, i.e., 1 x 2 = 2. Write 2 in the tens place.

$1b$

Explanation: In this step, multiply the digit in the tens place by 1, i.e., 2 x 1 = 2. Write 2 in the tens column.

Step: 1c

Finally, multiply the digit at the hundreds place by 1, i.e., 1 × 1 = 1 hundreds.
Write 1 at the hundreds place.
Therefore, 121 × 1 is 121.

$1c$

Explanation: When 1 is multiplied by 6, we get 6. Write 6 in the hundred’s place. Hence, 121 multiplied by 1 is equal to 121.