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 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. For example, the absolute value of -5 is 5.

Front

What is the opposite of a number?

Back

The opposite of a number is the number that is the same distance from zero but in the opposite direction. For example, the opposite of 3 is -3.

Front

How do you add two rational numbers with different signs?

Back

To add two rational numbers with different signs, subtract the absolute values and take the sign of the number with the larger absolute value.

Front

What is the sum of -4 and -10?

Back

The sum of -4 and -10 is -14.

Front

What is the result of 3 + -7?

Back

The result of 3 + -7 is -4.

Front

What is a positive number?

Back

A positive number is any number greater than zero, located to the right of zero on the number line.

Front

What is the value of (-4) + 8 - 5?

Back

The value of (-4) + 8 - 5 is -1.

Front

How do you subtract a rational number from another?

Back

To subtract a rational number, add its opposite. For example, to calculate 5 - 3, you can do 5 + (-3).

Front

What is the difference between -5 and 3?

Back

The difference between -5 and 3 is -8.