Dividing by Unit and Non-Unit Fractions

Mrs. Nelson explains how to divide numbers by unit and non-unit fractions, using diagrams to illustrate the process. She introduces the concept of reciprocals, showing that dividing by a fraction is equivalent to multiplying by its reciprocal. The video covers examples of dividing by fractions like 1/3, 2/3, and 3/4, emphasizing reasoning with numerators and denominators.

What is a unit fraction?

• A fraction with 1 in the numerator

• A fraction with 1 in the denominator

• A fraction with equal numerator and denominator

• A fraction with a numerator greater than the denominator

Which of the following is a non-unit fraction?

• 1/127

• 1/2

• 1/10

• 2/3

How do you calculate 6 divided by 1/3?

• 6 times 1/3

• 6 divided by 3

• 6 times 3

• 6 plus 3

What is the result of 6 divided by 2/3?

• 6 times 3/2

• 6 plus 3/2

• 6 times 2/3

• 6 divided by 3/2

What is the reciprocal of 2/3?

• 3/2

• 2/3

• 1/3

• 3/1

How many groups of 3/4 are in 6?

• 9

• 8

• 7

• 10

What is the reciprocal of 3/4?

• 4/1

• 1/4

• 3/4

• 4/3

What is the result of 6 divided by 3/4?

• 6 times 3/4

• 6 times 4/3

• 6 divided by 4/3

• 6 plus 4/3

What is the main concept learned about dividing by fractions?

• Dividing by a fraction is the same as multiplying by its reciprocal

• Dividing by a fraction is the same as subtracting its reciprocal

• Dividing by a fraction is the same as adding its reciprocal

• Dividing by a fraction is the same as dividing by its reciprocal

What is the objective of the lesson?

• To multiply numbers by fractions

• To add numbers to fractions

• To subtract numbers from fractions

• To divide numbers by unit and non-unit fractions