Multiplying and Dividing Rational Numbers

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

To multiply two rational numbers, multiply their numerators together and their denominators together. For example, $$\frac{a}{b} \times \frac{c}{d} = \frac{a \times c}{b \times d}$$ .

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

The product of two negative numbers is positive.

To divide two rational numbers, multiply the first number by the reciprocal of the second number. For example, $$\frac{a}{b} \div \frac{c}{d} = \frac{a}{b} \times \frac{d}{c}$$ .

The reciprocal of a fraction $$\frac{a}{b}$$ is $$\frac{b}{a}$$ .

The product is 8.4.

The quotient is -3.

It will take 338.25 hours.

Tanya pays $1.26.