SaiBook.us Multiplication

Lesson Example Discussion Quiz: Class Homework

Example

Title: Multiplications

Grade: 4-a Lesson: S2-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 51 x 24

Arrange the numbers in vertically.

$1a$

Explanation: Place the multiplicand 51 on top and multiplier 24 on bottom.

Step: 1b

Multiply the ones digits on the top number by the ones digit of the bottom number…Here the digits are 1 x 4=4..write the product in ones column..

$1b$

Explanation: When 1 is multiplied by 4, we get 4. Now, we write 4 in 0nes column.

Step: 1c

Multiply the tens digits on the top number by the ones digit of the bottom number…Here the digits are 5 x 4=20..write the product beside the ones column.since tens column.

$1c$

Explanation: When 5 is multiplied by 4, we get 20. Write the digit 20 in tens column. the first partial product is 204, that will be placed in one line.

Step: 1d

Multiply the ones digits on the top number by the tens digit of the bottom number…Here the digits are 1 x 2=2..Place the value under the first partial product in tens column.

$1d$

Explanation: When 1 is multiplied by 2, we get 2. Place the value under the first partial product in the tens column.

Step: 1e

Multiply the tens digits on the top number by the tens digit of the bottom number. Here the digits 5 x 2=10. Write the value 10 under the hundreds column in the first partial product.

$1e$

Explanation: When 5 is multiplied by 2, we get 10. Write the value 10 under the hundreds column in the first partial product. Here the second partial product is 102. That will be placed in another line. We have to put the 0 in the one’s column.

Step: 1f

Add the both first and second partial products 204 + 1020=1224

$1f$

Explanation: Add both of your results to get a final answer. Now need to add 204 + 1020 to get 1224.