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, you 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, you 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 adding a positive rational number to a negative rational number?

Back

The result can be positive, negative, or zero, depending on the absolute values of the numbers being added.

Front

What is the result of subtracting a rational number from another rational number?

Back

Subtracting a rational number is the same as adding its opposite.

Front

What is the value of (-5) + 3?

Back

The value is -2.

Front

What is the value of 7 - (-2)?

Back

The value is 9.

Front

If you have -10 and you add 4, what is the result?

Back

The result is -6.

Front

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

Back

The value is -10.

Front

How do you subtract two fractions with the same denominator?

Back

When subtracting two fractions with the same denominator, you subtract the numerators and keep the same denominator.