SaiBook.us Multiplication

Lesson Example Discussion Quiz: Class Homework

Example

Title: Multiplications

Grade: 4-a Lesson: S2-L7

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 59 x 30

Arrange the numbers in vertically.

$1a$

Explanation: Place the multiplicand 59 on top and multiplier 30 on bottom.

Step: 1b

Multiply the one’s digits on the top number by the one’s digit of the bottom number. Here the digits are 9 x 0=0..write the 0 in ones column.

$1b$

Explanation: When 9 is multiplied by 0, we get 0. Write 0 in ones 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 0=0

$1c$

Explanation: When 5 is multiplied by 0, we get 0. Here the first partial product is 00. That will be placed in one line.

Step: 1d

Multiply the one’s digit on the top number by the ten’s digit of the bottom number…Here the digits are 9 x 3=27..write the 7 in the tens column. Carryover the 2 that goes to the next place.

$1d$

Explanation: When 9 is multiplied by 3, we get 27. write the 7 in the tens column under the first partial product. Carryover the 2 that goes to the next place.

Step: 1e

Multiply the tens digits on the top number by the tens digit of the bottom number. Here the digits 5 x 3=15. Add the carryover number 2. Now 15 + 2=17, write this value beside the one’s place digit. Here the second partial product is 177.

$1e$

Explanation: When 5 is multiplied by 3, we get 15. Add the carryover number 2. Now 15 + 2=17, write this value beside the one’s place digit. Here the second partial product is 177. that will be placed on another line. We have to put the 0 in the one’s column.

Step: 1f

Add the both first and second partial products 00 + 1770=1770

$1f$

Explanation: Add both of your results to get a final answer. Now need to add 00 + 1770 to get 1770.