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 a positive and a negative rational number?

Back

To add a positive and a negative rational number, subtract the absolute values and take the sign of the number with the larger absolute value.

Front

What is the result of 34.5 + (-7)?

Back

27.5

Front

How do you subtract a negative number from a negative number?

Back

Subtracting a negative number is the same as adding its absolute value.

Front

What is the result of -0.3 − (-0.9)?

Back

0.6

Front

What does it mean to simplify a fraction?

Back

To simplify a fraction means to reduce it to its lowest terms, where the numerator and denominator have no common factors other than 1.

Front

What is the result of -7 - 2?

Back

-9

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction.

Front

What is the value of | –7 |?

Back

7

Front

How do you find the sum of two rational numbers?

Back

To find the sum, ensure the denominators are the same, then add the numerators and keep the denominator.