Adding & 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

How do you add two rational numbers with the same denominator?

Back

To add two rational numbers with the same denominator, you add the numerators together and keep the denominator the same.

Front

How do you subtract two rational numbers with the same denominator?

Back

To subtract two rational numbers with the same denominator, you subtract the second numerator from the first and keep the denominator the same.

Front

What is the process for adding rational numbers with different denominators?

Back

To add rational numbers with different denominators, first find a common denominator, convert each fraction to an equivalent fraction with that denominator, then add the numerators.

Front

What is the process for subtracting rational numbers with different denominators?

Back

To subtract rational numbers with different denominators, find a common denominator, convert each fraction to an equivalent fraction with that denominator, then subtract the numerators.

Front

What is the significance of a negative sign in front of a rational number?

Back

A negative sign indicates that the number is less than zero, representing a value that is below a reference point.

Front

How do you interpret a negative result when adding rational numbers?

Back

A negative result indicates that the total is below zero, which can represent a loss or a deficit in a real-world context.

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What is the formula for calculating change received after a purchase?

Back

Change = Amount Paid - Total Cost.

Front

How do you calculate the total cost of multiple items?

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To calculate the total cost, add the prices of all items together.

Front

What does it mean for a temperature to be 'below average'?

Back

Being 'below average' means that the temperature is lower than the average temperature for that time period.