SaiBook.us Multiplication

Lesson Example Discussion Quiz: Class Homework

Example

Title: Multiplications

Grade: 3-a Lesson: S4-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

Find the product of 103 & 8.

Arrange the numbers vertically.
Multiply the digit at the one’s place by 8, i.e., 3 × 8 = 24 = 2 tens + 4 ones.
Write 4 in the one’s place and carry over 2 to the tens column.

$1a$

Explanation: In this step, arrange the numbers according to their places. Multiply the digit in the one’s place by 8, i.e., 3 × 8 = 24. This equals 2 tens and 4 ones. Write 4 in the one’s place and carry over 2 to the tens column.

Step: 1b

Multiply the digit at the tens place by 8, i.e.,8 x 0 = 0. Now, 0 + 2 (carry over) = 2. Write 2 in the tens column.

$1b$

Explanation: In this step, multiply the digit in the tens place by 8, i.e., 8 x 0 = 0. Then add 2 (carry over) to get 2, and write it in the tens column.

Step: 1c

Now multiply the digit at the hundreds place by 8.
8 × 1 = 8 hundreds. Write 8 at the hundreds place.
Therefore, \$103 \times 8\$ is 824.

$1c$

Explanation: When 1 is multiplied by 8, we get 8. Write 8 in the hundred’s place. Thus, \$103 \times 8\$ is 824.