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

What does it mean to add a negative number?

Back

Adding a negative number is the same as subtracting the absolute value of that number.

Front

What is the result of 3 + (-7)?

Back

-4

Front

How do you subtract 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 is the result of -4 - (-3)?

Back

-1

Front

What is the result of ¼ - (-¾)?

Back

1

Front

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

Back

27.5

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

How do you find a common denominator for fractions?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators.