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

How do you add two rational numbers with different denominators?

Back

To add two rational numbers with different denominators, find a common denominator, convert each fraction, and then add the numerators.

Front

What is the result of adding -2 and 5?

Back

3

Front

What is the result of subtracting -3 from 4?

Back

7

Front

How do you multiply two rational numbers?

Back

To multiply two rational numbers, multiply the numerators together and the denominators together.

Front

What is the product of -3/4 and 2/3?

Back

-1/2

Front

What is the rule for multiplying two negative numbers?

Back

The product of two negative numbers is positive.

Front

What is the result of dividing -8 by 2?

Back

-4

Front

What is the absolute value of -5?

Back

5

Front

How do you determine if the result of an operation with rational numbers is positive or negative?

Back

The result is positive if there are an even number of negative factors; otherwise, it is negative.