Multiplying/Dividing Rational Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

How do you multiply two rational numbers?

Back

To multiply two rational numbers, multiply their numerators together and their denominators together. Then simplify the result if possible.

Front

What is the rule for multiplying two negative rational numbers?

Back

The product of two negative rational numbers is positive.

Front

What is the rule for multiplying a positive and a negative rational number?

Back

The product of a positive rational number and a negative rational number is negative.

Front

How do you divide two rational numbers?

Back

To divide two rational numbers, multiply the first number by the reciprocal of the second number.

Front

What is the reciprocal of a rational number?

Back

The reciprocal of a rational number a/b is b/a, provided that a and b are not zero.

Front

What does it mean to simplify a fraction?

Back

To simplify a fraction means to reduce it to its lowest terms, where the numerator and denominator have no common factors other than 1.

Front

What is the simplest form of the fraction 39/5?

Back

The simplest form of the fraction 39/5 is 39/5, as it cannot be simplified further.

Front

Calculate: -⅞ * -⅗

Back

The result is 21/40.

Front

Calculate: -⅞ * ⅗

Back

The result is -21/40.