Adding and Subtracting Rational Numbers

Front

When adding rational numbers with the same sign, you must:

Back

Add together and keep the sign.

Front

If the temperature in Chicago is -5 degrees and the temperature in Moscow is 8 degrees colder, what is the temperature in Moscow?

Back

-13 degrees.

Front

Evaluate: −28 + (−8)

Back

−36.

Front

Evaluate: -19 - 10

Back

-29.

Front

Evaluate: -6.5 + (-0.5)

Back

-7.

Front

What is a rational number?

Back

A number that can be expressed as a fraction of two integers.

Front

What is the rule for subtracting rational numbers?

Back

Change the sign of the number being subtracted and then add.

Front

What happens when you add a positive rational number to a negative rational number?

Back

You subtract the absolute values and keep the sign of the number with the larger absolute value.

Front

What is the result of adding two negative rational numbers?

Back

The result is always negative.

Front

What is the result of adding two positive rational numbers?

Back

The result is always positive.