5.NF.7 Dividing Unit Fractions and Whole Numbers

Front

What is a unit fraction?

Back

A unit fraction is a fraction where the numerator is 1 and the denominator is a positive integer, such as 1/2, 1/3, or 1/4.

Front

How do you divide a whole number by a unit fraction?

Back

To divide a whole number by a unit fraction, multiply the whole number by the reciprocal of the unit fraction.

Front

What is the reciprocal of a fraction?

Back

The reciprocal of a fraction is obtained by flipping the numerator and denominator. For example, the reciprocal of 1/4 is 4/1.

Front

If you have 1/5 of a mile and you want to find out how many times it fits into 12 miles, what operation do you use?

Back

You use division: 12 ÷ (1/5) = 12 * 5 = 60.

Front

What does it mean to divide a fraction by a whole number?

Back

Dividing a fraction by a whole number means finding out how many equal parts of the fraction fit into the whole number.

Front

If a pet store has 1/4 of a bag of cat food and 9 cats to feed, how do you find out how much each cat gets?

Back

You divide the fraction of food by the number of cats: (1/4) ÷ 9 = (1/4) * (1/9) = 1/36.

Front

What is the result of dividing one fourth by twelve?

Back

The result is 1/48.

Front

How many days will 5 boxes of waffle cones last if 1/6 of a box is used each day?

Back

It will last 30 days.

Front

When dividing a fraction by a whole number, what does the model represent?

Back

The model represents an amount less than one whole.

Front

What is the formula to find out how many times a fraction fits into a whole number?

Back

The formula is: Whole Number ÷ Fraction = Whole Number * (Reciprocal of the Fraction).