Operations with 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 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 of the numbers; if the positive number is larger, the result is positive, and if the negative number is larger, the result is negative.

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 difference of –96.43 – (–98.67)?

Back

2.24

Front

If a student has $78 and spends $12, how much is left?

Back

$66

Front

What is the expression for adding a negative number?

Back

Adding a negative number is the same as subtracting the positive version of that number.

Front

What is the total cost if Noa buys 6 items at $4.25 and 3 items at $6.75?

Back

$45.75

Front

What is the equivalent expression for 63.56 + (–81.47)?

Back

63.56 – 81.47

Front

How do you represent a decrease in price?

Back

A decrease in price is represented by a negative number.