Mastering Partial Products for Decimal Multiplication

The video tutorial covers Lesson 5.6 on using partial products to multiply decimals. It begins with an introduction to the concept and proceeds with four detailed examples, demonstrating the step-by-step process of multiplying decimals without aligning decimal points. Each example emphasizes the importance of counting decimal places in the final answer. The lesson concludes with a reminder to complete the assignment and ask questions if needed.

What is the learning target for this lesson?

• To use partial products to multiply decimals

• To subtract decimals

• To divide decimals

• To add decimals

In the first example, what is the product of 2 tenths and 8 tenths?

• 1.6

• 0.016

• 0.16

• 16

When multiplying 3.2 by 4.8, what is the sum of 3 times 8 plus the regrouped 1?

• 25

• 24

• 23

• 26

In the second example, what is the product of 4 times 3?

• 16

• 12

• 14

• 7

How many place values are there to the right of the decimal in the problem 4.1 x 2.3?

• 2

• 3

• 1

• 4

In the third example, what is the product of 7 times 4?

• 28

• 32

• 24

• 21

What is the final product of 16.7 times 0.4?

• 66.8

• 6.68

• 668

• 0.668

In the fourth example, what is the product of 9 times 6?

• 45

• 54

• 72

• 63

What is the sum of 5 times 6 plus the regrouped 5 in the problem 5.9 x 8.6?

• 30

• 40

• 45

• 35

How many place values are there to the right of the decimal in the problem 5.9 x 8.6?

• 4

• 3

• 2

• 1