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 sum of -31 and -7?

Back

-38

Front

What are positive numbers?

Back

Numbers that are greater than zero and located to the right of zero on the number line.

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.

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.

Front

How do you add two negative numbers?

Back

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

Front

What is the result of -4 - 10?

Back

-14

Front

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

Back

Subtracting a negative number is the same as adding its absolute value.

Front

What is the change in temperature from 15 degrees to -12 degrees?

Back

-27 degrees.

Front

What is the rule for adding rational numbers with different signs?

Back

When adding 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.