Decimal Division and Exponents

In this lesson, students learn to divide decimals by decimals by converting the divisor into a whole number using powers of 10. The video reviews dividing decimals by whole numbers and provides examples of long division with decimals, including adding zeros as placeholders. It also covers unit conversion from centimeters to inches. The lesson concludes with a preview of the next topic on rational numbers.

What is the first step when dividing a decimal by another decimal?

• Multiply the dividend by 2

• Subtract the divisor from the dividend

• Add zeros to the dividend

• Convert the divisor to a whole number

What does 10 to the second power equal?

• 100

• 1

• 1000

• 10

How many times do you move the decimal point when multiplying by 10 to the third power?

• Three times

• Four times

• Two times

• One time

In the example of dividing 4.8 by 1.2, what whole number does 4.8 become after adjusting the decimal?

• 36

• 12

• 24

• 48

When dividing 48 by 12, what is the result?

• 5

• 4

• 3

• 2

Why might you need to add zeros to the dividend in decimal division?

• To make the divisor larger

• To make the division easier

• To ensure the dividend has enough digits

• To change the divisor to a whole number

What is the result of dividing 480 by 12?

• 30

• 60

• 40

• 50

How many inches are equivalent to 66.04 centimeters?

• 26

• 30

• 24

• 28

What is the first step in converting centimeters to inches using division?

• Multiply the centimeters by 2

• Subtract the divisor from the centimeters

• Move the decimal point in the divisor

• Add zeros to the centimeters

In the real-world example, how many times does 254 fit into 1524?

• 5 times

• 8 times

• 6 times

• 7 times