Review Flashcard Rational Numbers

Front

What are rational numbers?

Back

Rational numbers are numbers that can be expressed as a fraction or ratio of two integers, where the denominator is not zero. Examples include 1/2, -3, and 0.75.

Front

What is the relationship between whole numbers and integers?

Back

All whole numbers are integers, but not all integers are whole numbers. Whole numbers include 0 and positive numbers, while integers include negative numbers as well.

Front

If Charli's bank account changes by -$8.75 for each nail polish, how do you calculate the total change after buying multiple items?

Back

To find the total change, multiply the cost of one item by the number of items bought. For example, if she bought 6 nail polishes, the total change is -$8.75 * 6 = -$52.50.

Front

How do you divide a fraction by a whole number?

Back

To divide a fraction by a whole number, multiply the denominator of the fraction by the whole number. For example, 1/2 ÷ 4 = 1/(2*4) = 1/8.

Front

What is the formula to calculate total earnings based on hourly wage and hours worked?

Back

Total earnings = Hourly wage × Hours worked. For example, if the hourly wage is $11.20 and hours worked are 300 (30 hours/week for 10 weeks), then total earnings = $11.20 × 300 = $3,360.

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero. Examples include -3, 0, and 5.

Front

What are whole numbers?

Back

Whole numbers are non-negative integers, including zero. Examples are 0, 1, 2, 3, etc.

Front

What is the process to find the average of a set of numbers?

Back

To find the average, add all the numbers together and then divide by the total count of numbers.

Front

How do you convert a mixed number to an improper fraction?

Back

To convert a mixed number to an improper fraction, multiply the whole number by the denominator, add the numerator, and place that result over the original denominator.

Front

What is the significance of a negative number in a financial context?

Back

A negative number in finance typically indicates a loss or debt. For example, -$8.75 means a decrease in funds.