Dividing Decimals: Master the Basics

In this video, Mr. J teaches fifth-grade students how to divide decimals using decimal divisors. The lesson begins with an introduction to the concept, followed by four detailed examples demonstrating the process of making the divisor whole by moving the decimal point. Each example is explained step-by-step, emphasizing the importance of aligning the decimal in the quotient correctly. The video concludes with a recap and encourages students to practice on their own using a mastery check provided in the description.

What is the first step when dividing decimals with a decimal divisor?

• Move the decimal in the divisor to make it whole

• Multiply the divisor by 10

• Subtract the divisor from the dividend

• Bring the decimal straight up in the quotient

What happens if the divisor is not whole?

• The division process cannot continue

• The divisor must be converted into a whole number

• The dividend is automatically rounded

• The quotient is considered invalid

How do you adjust the dividend when you move the decimal in the divisor?

• Subtract the movement from the dividend

• Divide the dividend by 10

• Multiply the dividend by the same power of 10

• Leave the dividend unchanged

What is the quotient of 71.2 divided by 0.2?

• 3560

• 3.56

• 35.6

• 356

What common mistake is highlighted in the video?

• Ignoring zeros in the dividend

• Multiplying instead of dividing

• Forgetting to move the decimal

• Not completing the division to the lowest place value

What is the result of 49.6 divided by 0.04?

• 1240

• 124

• 1.24

• 12.4

When dividing 3.15 by 1.5, what is the correct first step?

• Multiply both numbers by 10

• Divide as is without any adjustments

• Move the decimal in both the divisor and dividend

• Subtract 1.5 from 3.15

What is the final quotient of 3.15 divided by 1.5?

• 210

• 2.1

• 21

• 0.21

What should you do if your divisor is a decimal?

• Ignore the decimal and divide

• Multiply it by 100

• Round it to the nearest whole number

• Move the decimal to make it a whole number

What is the quotient of 0.5 divided by 125?

• 0.004

• 0.04

• 2.5

• 250