SaiBook.us Multiplication

Lesson Example Discussion Quiz: Class Homework

Example

Title: Multiplications

Grade: 4-a Lesson: S1-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 44 x 19

Place the multiplicand 44 on top, and the multiplier is 19. Multiply the ones digit of the multiplier 9 with the multiplicand 44. This will give 44 × 9 = 396. This is the first partial product that will be placed in one line.

$1a$

Explanation: In this step, multiply 44 by 9. Multiply 4 by 9 to get 36. Place 6 in the one’s place, and carry 3 to the tens column. Multiply 4 by 9 to get 36. Add a carry-over of 3, and we go for it 36 + 3 =39. We get the answer is 396. This is the first partial product placed in one line.

Step: 1b

Multiplying with the tens column.This will give 44 × 1=44. Write a 0 in the one’s column as shown below.
Multiply the one’s digit on the top number with the ten’s digit of the bottom number, i.e., 4 × 1 = 4
Multiply the tens digit on the top number and the tens digit of the bottom number, i.e., 4 × 1 = 4. The value of a second partial product is 440.

$1b$

Explanation: In this step, multiply the bottom tens digit, which is 1, by the number on the top which is 4. So, 4 x 1 = 4. Write down the number 4 next to the 0. For 4 x 1 = 4, write down the number 4 next to the 4 that you already wrote down. This way, you will get the final answer of 440. This is the second partial product placed in another line."

Step: 1c

Add both partial products to get the final product
This will be 396 + 440 =836.

$1c$

Explanation: Add both of your results to get a final answer. Now need to add 396 + 440 to get 836.