7th Grade Math Chapter 4: 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

How do you 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 the numbers.

Front

What is the formula to calculate total cost?

Back

Total Cost = Price per item × Quantity.

Front

How do you calculate the weight of multiple items?

Back

Multiply the average weight of one item by the total number of items.

Front

What is the process to determine how much money was spent?

Back

Subtract the amount of money left from the amount of money originally had.

Front

How do you calculate gas mileage?

Back

Gas Mileage = Total miles driven ÷ Total gallons of gas used.

Front

What is the significance of the decimal point in rational numbers?

Back

The decimal point separates the whole number part from the fractional part, indicating the value of the number.

Front

How do you convert a fraction to a decimal?

Back

Divide the numerator by the denominator.

Front

What is the importance of estimating in calculations?

Back

Estimating helps to quickly assess the reasonableness of an answer before performing exact calculations.

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to a nearby specified value, often to make calculations easier.