Dividing by Unit and Non-Unit Fractions

Mrs. Nelson explains how to divide numbers by unit and non-unit fractions, using diagrams and reasoning with numerators and denominators. The video covers the concept of unit fractions, which have 1 in the denominator, and non-unit fractions, which have other numbers. It demonstrates how to divide by fractions using diagrams and introduces the concept of reciprocals, showing that dividing by a fraction is equivalent to multiplying by its reciprocal. The video concludes with a recap of the learning objectives.

What is a unit fraction?

• A fraction with a numerator greater than the denominator

• A fraction with equal numerator and denominator

• A fraction with 1 in the denominator

• A fraction with 1 in the numerator

How do you divide a number by a unit fraction?

• Subtract the fraction from the number

• Divide the number by the reciprocal of the fraction

• 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?

• 9

• 2

• 3

• 18

When dividing by a non-unit fraction, what is the equivalent operation?

• Subtract the fraction from the number

• Multiply by the fraction

• Multiply by the reciprocal of the fraction

• Divide by the reciprocal of the fraction

What is the reciprocal of 2/3?

• 3/1

• 1/2

• 2/3

• 3/2

How many groups of 2/3 are in 6?

• 6

• 12

• 9

• 3

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

• 9

• 6

• 8

• 12

What is the reciprocal of 3/4?

• 3/1

• 1/3

• 3/4

• 4/3

What is the key concept when dividing by a fraction?

• Subtract the fraction from the number

• Multiply by the fraction

• Multiply by the reciprocal of the fraction

• Divide by the fraction

What is the objective of this lesson?

• To divide numbers by unit and non-unit fractions

• To multiply numbers by fractions

• To subtract fractions from whole numbers

• To add fractions to whole numbers