Rational Number Operations

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

How do you subtract rational numbers?

Back

To subtract rational numbers, find a common denominator, convert the fractions, and then subtract the numerators.

Front

What is the reciprocal of a rational number?

Back

The reciprocal of a rational number is obtained by flipping the numerator and denominator.

Front

What happens when you multiply a rational number by its reciprocal?

Back

When you multiply a rational number by its reciprocal, the result is 1.

Front

How do you divide rational numbers?

Back

To divide rational numbers, multiply by the reciprocal of the divisor.

Front

What is the result of adding a positive and a negative rational number?

Back

The result depends on the absolute values; if the positive number is larger, the result is positive, and if the negative is larger, the result is negative.

Front

What is the total change in position if a football team loses 9 yards on each of three plays?

Back

-27 yards

Front

What is 7.9 + 18.72?

Back

26.62