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 the same sign?

Back

When adding two rational numbers with the same sign, add their absolute values and keep the common sign.

Front

How do you add two rational numbers with different signs?

Back

When adding two rational numbers with different signs, subtract the smaller absolute value from the larger absolute value and take the sign of the number with the larger absolute value.

Front

What is the result of -23.4 - 3.4?

Back

-26.8

Front

What is the result of 3 + -7?

Back

-4

Front

Rewrite the problem -5.66 - (-4.1) as addition.

Back

-5.66 + 4.1

Front

What is the result of 2 6/9 + (-5 1/4)?

Back

-2 7/12

Front

When adding decimals with different signs, what do you do?

Back

Subtract and take the sign of the larger number.

Front

What is the first step in adding fractions?

Back

Find a common denominator.

Front

How do you subtract rational numbers?

Back

To subtract rational numbers, add the opposite of the number being subtracted.