Rational Numbers Word Problems Check Point 2.4

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 represent a loss in yardage in a mathematical expression?

Back

A loss in yardage is represented as a negative integer. For example, losing 22 yards is represented as -22.

Front

What is the formula to find the average amount of items per container?

Back

The average amount of items per container is found by dividing the total number of items by the number of containers. Formula: Total Items / Number of Containers.

Front

How do you calculate the overall change in position when given gains and losses?

Back

To calculate the overall change in position, sum the gains and losses. Gains are positive, and losses are negative.

Front

What does the expression 60 / p represent in a word problem?

Back

The expression 60 / p represents the number of photos on each page when 60 photos are divided evenly among p pages.

Front

How do you find the final price of a stock after multiple changes in value?

Back

To find the final price of a stock, start with the initial price and add or subtract the changes in value sequentially.

Front

What is the expression for total earnings based on hourly wage and hours worked?

Back

The total earnings can be expressed as: Total Earnings = Hourly Wage (d) × Hours Worked (40), or 40d.

Front

What is the significance of using parentheses in mathematical expressions?

Back

Parentheses indicate which operations should be performed first in an expression, following the order of operations.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal as a fraction with a denominator of 1, then multiply the numerator and denominator by 10 for each digit after the decimal point.

Front

What is the difference between an integer and a rational number?

Back

An integer is a whole number that can be positive, negative, or zero, while a rational number can be expressed as a fraction of two integers.