Operations with Rational Numbers Review

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 negative numbers?

Back

The sum of two negative numbers is always negative.

Front

What is the sum of a positive number and a negative number?

Back

The sum depends on the absolute values; if the positive number is larger, the result is positive, and if the negative number is larger, the result is negative.

Front

What happens when you add zero to a rational number?

Back

The sum is the same rational number.

Front

What is the product of two negative numbers?

Back

The product of two negative numbers is positive.

Front

What is the product of a positive number and a negative number?

Back

The product is negative.

Front

What is the value of the expression -5 + 3?

Back

-5 + 3 = -2.

Front

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

Back

-7 - (-2) = -7 + 2 = -5.

Front

What is the value of the expression 4 - 9?

Back

4 - 9 = -5.

Front

What is the value of the expression -12 + 8?

Back

-12 + 8 = -4.