Adding and subtracting 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 to an equivalent fraction with that denominator, and then add the numerators.

Front

What is the process for subtracting rational numbers?

Back

To subtract rational numbers, convert them to have a common denominator, then subtract the numerators and keep the common denominator.

Front

What is the height of a pylon that is 3½ yards below ground and 2¼ yards above ground?

Back

The height of the pylon is 5¾ yards.

Front

How do you simplify the expression -1/3 - (-5/12)?

Back

You can simplify it to -1/3 + 5/12.

Front

What is the value of the expression -1/3 - (-5/12)?

Back

The value of the expression is 1/12.

Front

What is the result of adding -8.6 and 7.2?

Back

The result is -1.4.

Front

How do you determine if a rational number is positive, negative, or zero?

Back

A rational number is positive if it is greater than zero, negative if it is less than zero, and zero if it is equal to zero.

Front

What is the result of the expression -1/3 - 4/5?

Back

The result is negative.

Front

What is the first step in solving an application-based question involving rational numbers?

Back

The first step is to carefully read the problem and identify the relevant information and what is being asked.