1-5: Add and Subtract 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, keep the denominator the same and add the numerators.

Front

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

Back

To subtract two rational numbers with the same denominator, keep the denominator the same and subtract the numerators.

Front

What is the formula for finding the perimeter of a rectangle?

Back

The perimeter P of a rectangle is given by the formula P = 2(length + width).

Front

How do you find the range of a set of numbers?

Back

The range is found by subtracting the smallest number in the set from the largest number.

Front

What does it mean to be 'lower' in temperature?

Back

A lower temperature means a decrease in thermal energy, often represented by a negative value in relation to a reference point.

Front

How do you add a positive and a negative rational number?

Back

To add a positive and a negative rational number, subtract the absolute values and take the sign of the number with the larger absolute value.

Front

What is the result of subtracting a negative number from a positive number?

Back

Subtracting a negative number is the same as adding its positive counterpart.

Front

How do you represent a temperature drop?

Back

A temperature drop can be represented by subtracting a positive number from the current temperature.

Front

What is the significance of zero in rational numbers?

Back

Zero is a rational number that represents a neutral point; it is neither positive nor negative.