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 negative rational numbers?

Back

When adding two negative rational numbers, you add their absolute values and keep the negative sign.

Front

What is the result of -9 + (-5)?

Back

-14

Front

When adding decimals with the same sign, what do you do?

Back

You add the numbers and keep the sign.

Front

What is the result of 2/6 + (-5 1/4)?

Back

-2 7/12

Front

When adding decimals with different signs, what is the process?

Back

You subtract the smaller absolute value from the larger absolute value and take the sign of the larger number.

Front

What is the least common denominator (LCD) of 6 and 9?

Back

The LCD of 6 and 9 is 18.

Front

What is the result of -3 + 7?

Back

4

Front

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

Back

You add the absolute value of the negative number to the positive number.

Front

What is the result of 5 - (-2)?

Back

7