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 two positive rational numbers?

Back

The sum of two positive rational numbers is always a positive rational number.

Front

What is the sum of two negative rational numbers?

Back

The sum of two negative rational numbers is always a negative rational number.

Front

What happens when you add 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.

Front

What is the rule for adding rational numbers with the same sign?

Back

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

Front

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

Back

When adding rational numbers with different signs, subtract their absolute values and take the sign of the number with the larger absolute value.

Front

Calculate: (-4) + 8 - 5

Back

-1

Front

Calculate: -28 + (-8)

Back

-36

Front

Calculate: -31 + -7

Back

-38

Front

If the temperature in Chicago is -5 degrees and the temperature in Moscow is 8 degrees colder, what is the temperature in Moscow?

Back

-13 degrees