Dividing by Fractions and Decimals

In this lesson, Mrs. Le Mo teaches fifth graders how to divide whole numbers by tenths and hundredths. The video begins with a warm-up exercise, followed by explanations of dividing by tenths and hundredths, highlighting patterns in division. Students learn to use grids for visualization and are encouraged to share strategies with partners. The lesson concludes with a cool down exercise and a summary of key concepts.

What is the main focus of lesson 22 in unit five?

• Adding decimals to whole numbers

• Dividing whole numbers by tenths and hundredths

• Subtracting fractions from whole numbers

• Multiplying whole numbers by fractions

What is the first step in dividing a whole number by a unit fraction?

• Add the fraction to the whole number

• Subtract the fraction from the whole number

• Divide the whole number by the fraction's numerator

• Multiply the whole number by the fraction's denominator

How many tenths are there in a whole number when divided by 1/10?

• 5

• 10

• 20

• 15

What is the result of dividing 2 by 1/10?

• 15

• 10

• 20

• 25

When dividing a whole number by 1/100, how many hundredths are there in one?

• 100

• 75

• 50

• 150

What is the result of dividing 1 by 1/100?

• 50

• 75

• 150

• 100

What is the result of dividing 2 by 1/100?

• 100

• 250

• 150

• 200

What pattern is observed when dividing by a tenth?

• The result is 5 times the original number

• The result is 10 times the original number

• The result is 15 times the original number

• The result is 20 times the original number

What is the result of dividing 3 by 1/10?

• 30

• 20

• 50

• 40

What is the result of dividing 3 by 1/100?

• 400

• 300

• 500

• 200