Multiplying Fractions by Whole Numbers

Front

What is a fraction?

Back

A fraction represents a part of a whole. It consists of a numerator (top number) and a denominator (bottom number). For example, in the fraction 1/2, 1 is the numerator and 2 is the denominator.

Front

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

Back

Multiplying a fraction by a whole number means you are taking that fraction and adding it to itself a certain number of times. For example, 2 x 1/3 means you have two parts of 1/3.

Front

How do you multiply a fraction by a whole number?

Back

To multiply a fraction by a whole number, multiply the numerator of the fraction by the whole number and keep the denominator the same. For example, 3 x 2/5 = (3*2)/5 = 6/5.

Front

What is the product of 2 and 1/3?

Back

The product of 2 and 1/3 is 2 x 1/3 = 2/3.

Front

If each student eats 1/4 of a pizza and there are 18 students, how many pizzas are needed?

Back

To find the total pizzas needed, multiply 18 by 1/4: 18 x 1/4 = 18/4 = 4 2/4 or 4.5 pizzas.

Front

What is the equation for 3 multiplied by 3/4?

Back

The equation is 3 x 3/4 = 9/4 or 2 1/4.

Front

What is the total weight of 4 jars of candy if each jar has 3/4 lb?

Back

The total weight is 4 x 3/4 = 12/4 = 3 lbs.

Front

What does the numerator in a fraction represent?

Back

The numerator represents the number of parts you have.

Front

What does the denominator in a fraction represent?

Back

The denominator represents the total number of equal parts the whole is divided into.

Front

How can you visualize multiplying a fraction by a whole number?

Back

You can visualize it by shading parts of a model. For example, if you multiply 2 x 1/3, you can shade 1/3 twice in a model.