Mastering Decimal Multiplication Techniques

The video tutorial reviews adding and subtracting decimals before introducing the concept of multiplying decimals. It explains the basic steps of ignoring decimal points during multiplication and adjusting the decimal place in the product. The teacher provides several example problems, including word problems, to illustrate the process. The video concludes with a reminder about an upcoming test and encourages students to focus on specific problems for practice.

What was the topic of yesterday's lesson?

• Adding and subtracting decimals

• Multiplying decimals

• Rounding decimals

• Dividing decimals

Tags

CCSS.5.NBT.B.7

What is the first step in multiplying decimals?

• Line up the decimal points

• Add the numbers first

• Subtract the numbers first

• Ignore the decimal points

Tags

CCSS.5.NBT.B.7

When multiplying 12 by 1.2, how many digits appear after the decimal point in the factors?

• Two

• One

• None

• Three

Tags

CCSS.5.NBT.B.7

In the problem 5.6 times 0.8, how many places do you move the decimal point in the final product?

• One

• Three

• Four

• Two

Tags

CCSS.6.NS.B.3

What is the product of 9.02 and 4.7?

• 0.42394

• 42.394

• 4.2394

• 423.94

Tags

CCSS.6.NS.B.3

How do you find the area of a rectangle?

• Add the length and the width

• Divide the length by the width

• Subtract the width from the length

• Multiply the length by the width

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

If a rectangle has a length of 10.5 inches and a width of 4 inches, what is its area?

• 4.2 square inches

• 420 square inches

• 0.42 square inches

• 42 square inches

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How much does a plane ticket cost if it is 15 cents per mile and the distance is 4908 miles?

• $7.36

• $7362.00

• $736.20

• $73.62

Tags

CCSS.6.NS.B.3

How many word problems will be on the test?

• 10

• 15

• 20

• 25

Tags

CCSS.1.OA.A.1

How many problems from each category must you solve on the test?

• Four

• Three

• Two

• One

Tags

CCSS.4.OA.C.5