Operations with 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

What is the sum of two rational numbers?

Back

The sum of two rational numbers is found by finding a common denominator and adding the numerators.

Front

What is the product of two rational numbers?

Back

The product of two rational numbers is found by multiplying the numerators together and the denominators together.

Front

What is the quotient of two rational numbers?

Back

The quotient of two rational numbers is found by multiplying the first number by the reciprocal of the second number.

Front

How do you add a positive and a negative rational number?

Back

To add a positive and a negative rational number, subtract the smaller absolute value from the larger absolute value and keep the sign of the number with the larger absolute value.

Front

What is the result of multiplying a negative rational number by a positive rational number?

Back

The result is a negative rational number.

Front

What is the result of multiplying two negative rational numbers?

Back

The result is a positive rational number.

Front

How do you divide a rational number by a negative rational number?

Back

Dividing a rational number by a negative rational number results in a negative rational number.

Front

What is the decimal representation of -3/8?

Back

-3/8 = -0.375.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator.