SaiBook.us Multiplication

Lesson Example Discussion Quiz: Class Homework

Example

Title: Multiplications

Grade: 3-a Lesson: S4-L2

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 107 & 2.

Arrange the numbers vertically.
Multiply the digit at the one’s place by 2, i.e., 2 × 7 = 14 = 1 tens + 4 ones.
Write 4 in the one’s place and carry over 1 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 2, i.e., 2 × 7 = 14. This equals 1 tens and 4 ones. Write 4 in the one’s place and carry over 1 to the tens column.

Step: 1b

Multiply the digit in the tens place by 2, i.e., 2 x 0 = 0. Then, add 1 (carry over) to get 1, and write it in the tens column.

$1b$

Explanation: In this step, multiply the digit in the tens place by 2, i.e., 2 x 0 = 0. Add 1 (carry over) + 0 = 1, and write it in the tens column.

Step: 1c

Finally, multiply the digit at the hundreds place by 2.
2 × 1 = 2 hundreds. Write 2 at the hundreds place.
Therefore,\$107 \times 2\$ is 214.

$1c$

Explanation: When 1 is multiplied by 2, we get 2. Write 2 in the hundred’s place. Hence, 107 multiplied by 2 is equal to 214.