multiplying fractions by whole numbers

Front

What is a fraction?

Back

A fraction represents a part of a whole and is written as 'a/b', where 'a' is the numerator (part) and 'b' is the denominator (whole).

Front

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

Back

Multiplying a fraction by a whole number means to take that fraction and add it to itself as many times as the whole number indicates.

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.

Front

What is 1/3 of 6?

Back

2 (because 1/3 x 6 = 6/3 = 2).

Front

What is 4/6 of 18?

Back

12 (because 4/6 x 18 = 72/6 = 12).

Front

What is 1/6 x 4?

Back

4/6 (because 1/6 x 4 = 4/6).

Front

What is 3/4 of 16?

Back

12 (because 3/4 x 16 = 48/4 = 12).

Front

If a recipe calls for 1/3 cup of sugar, how much sugar is needed for 6 batches?

Back

2 cups (because 1/3 x 6 = 6/3 = 2).

Front

If Sarah needs 1/3 cup of flour for 1 pie, how much for 9 pies?

Back

3 cups of flour (because 1/3 x 9 = 9/3 = 3).

Front

What is the formula for multiplying fractions?

Back

(a/b) x c = (a x c)/b.