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Lesson Table Topics Discussion Quiz: Class Homework

Example1

Title: Multiplication

Grade 4+ Lesson s1-l1

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

Examples

Topics → Definition Example1

Find the product of \$39 times 17\$.

Step: 1

First, place the multiplicand 39 on top, and write the multiplier 17 below it.

Next, multiply the ones digit of the multiplier, which is 7, with the multiplicand 39. This will give you 39 × 7 = 273. Write this as the first partial product on a new line.

$1a$

Explanation:

In this step, we’ll multiply 39 by 7. First, multiply 9 by 7 to get 63. Place 3 in the one’s place and carry 6 to the tens column. Next, multiply 3 by 7 to get 21. Add 21 to the carried-over 6 to get 27. Therefore, the answer is 273, which is the first partial product placed in one line.

Step: 2

Write a 0 in the one’s column. Multiply 1 by the multiplicand. This will give 39 × 1 = 39. Finally, we get 390.

$2a$

Explanation:

In this step, multiply the bottom tens digit, which is 1, by the number on the top which is 9. So, 9 x 1 = 9. Write down the number 9 next to the 0. For 3 x 1 = 3, write down the number 3 next to the 9 that you already wrote down. This way, you will get the final answer of 390. This is the second partial product placed in another line.

Step: 3

Add both partial products to get the final product This will be 273 + 390 =663.

$3a$

Explanation:

Add both of your results to get a final answer. Now need to add 273 + 390 to get 663.