Multiplying and Dividing Rational Fractions and Decimals

Front

What is a rational fraction?

Back

A rational fraction is a fraction where both the numerator and the denominator are integers, and the denominator is not zero.

Front

How do you multiply two rational fractions?

Back

To multiply two rational fractions, multiply the numerators together and the denominators together. For example, (a/b) * (c/d) = (a*c)/(b*d).

Front

What is the result of multiplying two negative numbers?

Back

The result of multiplying two negative numbers is a positive number.

Front

What is the result of dividing a negative number by a positive number?

Back

The result of dividing a negative number by a positive number is a negative number.

Front

How do you divide two rational fractions?

Back

To divide two rational fractions, multiply the first fraction by the reciprocal of the second fraction. For example, (a/b) ÷ (c/d) = (a/b) * (d/c).

Front

What is the value of -64 ÷ 4?

Back

-64 ÷ 4 = -16.

Front

What is the value of -8 x -5?

Back

-8 x -5 = 40.

Front

What is the value of -1.2 x -3.4?

Back

-1.2 x -3.4 = 4.08.

Front

What does it mean when a temperature drops at a rate of 2½ degrees for 4¼ hours?

Back

It means the total temperature drop can be calculated by multiplying the rate of drop by the time: 2.5 x 4.25 = 10.625, or -10 and 5/8 degrees.

Front

What is the rule for multiplying fractions?

Back

Multiply the numerators and multiply the denominators.