SaiBook.us Multiplication

Lesson Example Discussion Quiz: Class Homework

Example

Title: Multiplications

Grade: 3-a Lesson: S2-L2

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

Examples:

Find the product of 22 × 22.

Step: 1a

Multiply 27 by 20.

Arrange the numbers 22 and 22 in columns according to their places.

$1a$

Explanation: In this step, arrange the numbers 22 as the multiplicand and 22 as the multiplier.

Step: 1b

Multiply 2 by each digit of 22:
Multiplying 2 by 2 gives us 4 (2 x 2 = 4). We write 4 in the one’s column.
Then, we multiply 2 by 2 (2 x 2 = 4), write 4 in the tens place.
Our final answer is 44.

$1b$

Explanation: In this step, multiply 2 by each digit of 22. We start with 2. 2 x 2 = 4. Write 4 in the one’s column. Then, 2 x 2 = 4. Write 4 in the tens column. The final answer is 44.

Step: 1c

Now, we will place a zero (0) under the first partial product, that is, before writing the second partial product in the next line

$1c$

Explanation: In this step, before writing the second partial product in the next line, we will place a zero(0) under the first partial product.

Step: 1d

To find the product of 2 multiplied by each digit of 22, follow these steps.
Multiplying 2 by 2 gives us 4 (2 x 2 = 4). We write 4 in the ten’s column.
Then, we multiply 2 by 2 (2 x 2 = 4) and write 2 in the hundreds column.
Our final answer is 440.

$1d$

Explanation: In this step, multiply 2 by each digit of 22. We start with 2. 2 x 2 = 4. Write 4 in the ten’s column. Then, 2 x 2 = 4. Write 4 in the hundreds column. The final answer is 440.

Step: 1e

Add both partial products to get the final product
This means 00 + 540 = 540.
Therefore, the final product is 540.

$1e$

Explanation: Add both results to get a final answer. Now, we need to add 44 + 440 to get 484.