Dividing by Unit Fractions

This video tutorial explains how to divide whole numbers by unit fractions using a number line. It begins with an introduction to unit fractions and common misconceptions, such as why the quotient can be larger than the dividend. Through practical examples, like dividing ribbon into halves, the video demonstrates that dividing by a unit fraction is equivalent to multiplying by the denominator. Additional examples, such as dividing by 1/4 and 1/3, further illustrate this concept. The lesson concludes with a summary of the key points covered.

What is a unit fraction?

• A fraction with a numerator of 1

• A fraction with a denominator of 1

• A fraction with a numerator greater than the denominator

• A fraction with equal numerator and denominator

Why might the quotient be larger than the dividend when dividing by a unit fraction?

• Because the dividend is divided by the denominator

• Because the dividend is multiplied by the denominator

• Because the dividend is multiplied by the numerator

• Because the dividend is divided by the numerator

If you have 3 yards of ribbon and each bow requires 1/2 yard, how many bows can you make?

• 6 bows

• 5 bows

• 4 bows

• 3 bows

What is the result of dividing 3 by 1/5?

• 3/5

• 15

• 1/15

• 5

How can dividing by a unit fraction be expressed in terms of multiplication?

• By dividing by the numerator

• By multiplying by the denominator

• By dividing by the denominator

• By multiplying by the numerator

What is the result of dividing 15 by 1/3?

• 45

• 5

• 15

• 3

What is the equivalent multiplication expression for dividing 15 by 1/3?

• 15 / 3

• 15 x 3

• 15 / 1/3

• 15 x 1/3