Dividing Fractions and Reciprocals

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 a numerator greater than the denominator

• A fraction with 1 in the denominator

• A fraction with 1 in the numerator

• A fraction with equal numerator and denominator

Which of the following is a non-unit fraction?

• 1/2

• 2/3

• 1/127

• 1/10

How many groups of 1/3 are there in 6?

• 6

• 12

• 9

• 18

What is the result of dividing 6 by 1/3?

• 18

• 2

• 3

• 12

How can dividing by 2/3 be expressed using multiplication?

• 6 times 2

• 6 times 1/2

• 6 times 3/2

• 6 times 2/3

What is the reciprocal of 2/3?

• 3/2

• 1/2

• 2/3

• 3

How many groups of 3/4 are there in 6?

• 8

• 6

• 12

• 9

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

• 12

• 9

• 8

• 6

What is the reciprocal of 3/4?

• 4/3

• 3/4

• 3

• 1/3

What is the main takeaway about dividing by fractions?

• It is the same as subtracting the fraction

• It is the same as adding the fraction

• It is the same as multiplying by the reciprocal

• It is the same as multiplying by the fraction