Multiply and Divide Whole Numbers and Fractions

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 multiplied by 4 (3 x 4) means adding 3 four times (3 + 3 + 3 + 3) which equals 12.

Front

What is division?

Back

Division is a mathematical operation that represents the process of splitting a number into equal parts. For example, 12 divided by 4 (12 ÷ 4) means splitting 12 into 4 equal parts, which equals 3.

Front

How do you multiply a whole number by a fraction?

Back

To multiply a whole number by a fraction, multiply the whole number by the numerator (top number) of the fraction and then divide by the denominator (bottom number). For example, 3 x 1/2 = 3/2 or 1 1/2.

Front

How do you divide a whole number by a fraction?

Back

To divide a whole number by a fraction, multiply the whole number by the reciprocal of the fraction. For example, 4 ÷ 1/2 = 4 x 2/1 = 8.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a fraction. For example, 1 3/4 is a mixed number, which means 1 whole and 3/4 of another whole.

Front

How do you convert an improper fraction to a mixed number?

Back

To convert an improper fraction to a mixed number, divide the numerator by the denominator. The quotient is the whole number, and the remainder becomes the numerator of the fraction.

Front

What is the total weight of 7 servings of trail mix if each serving weighs 1/4 pound?

Back

1 3/4 pounds. (7 x 1/4 = 7/4 = 1 3/4)

Front

If Brandy works out for 2/3 hour every day for 14 days, how many hours does she work out?

Back

9 1/3 hours. (2/3 x 14 = 28/3 = 9 1/3)

Front

How many quarters are in a stack that is 5 inches high if each quarter is 1/16 inch thick?

Back

80 quarters. (5 ÷ 1/16 = 5 x 16/1 = 80)

Front

If Curt has 18 apps and 5/8 are math games, how many math games does he have?

Back

11 1/2 math games. (18 x 5/8 = 90/8 = 11 1/2)