Dividing by Fractions Concepts

Mrs. Nelson introduces sixth-grade students to dividing by unit and non-unit fractions. She explains the concept of unit fractions, which have a numerator of one, and non-unit fractions, which have other numerators. The video demonstrates how to divide numbers by these fractions using diagrams and reasoning with numerators and denominators. The concept of reciprocals is introduced, showing that dividing by a fraction is equivalent to multiplying by its reciprocal. The video aims to help students understand and apply these concepts in mathematical operations.

What is a unit fraction?

• A fraction with 1 in the denominator

• A fraction with 1 in the numerator

• A fraction with equal numerator and denominator

• A fraction with a numerator greater than the denominator

How do you divide a number by a unit fraction?

• Divide the number by the reciprocal of the fraction

• Subtract the fraction from the number

• Multiply the number by the reciprocal of the fraction

• Multiply the number by the fraction

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

• 2

• 18

• 9

• 3

What is the reciprocal of 2/3?

• 3/4

• 2/3

• 3/2

• 1/2

How many groups of 2/3 are in 6?

• 3

• 12

• 9

• 6

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

• 4

• 12

• 8

• 9

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

• 6

• 8

• 9

• 12

What is the reciprocal of 3/4?

• 1/3

• 2/3

• 3/4

• 4/3

What is the key concept when dividing by a fraction?

• Adding the fraction

• Dividing by the reciprocal

• Multiplying by the reciprocal

• Subtracting the fraction

What is the objective of this lesson?

• To add fractions

• To divide by unit and non-unit fractions

• To multiply fractions

• To subtract fractions