Operations of Rational Numbers 7.3B

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 different denominators?

Back

To add two rational numbers with different denominators, find a common denominator, convert each fraction, and then add the numerators.

Front

What is the formula to calculate sales tax?

Back

Sales Tax = Price of Item x Sales Tax Rate.

Front

If Sara ordered breakfast costing $6.00 and paid $10.00, how do you calculate her change?

Back

Change = Amount Paid - Total Cost. Change = $10.00 - $6.00 = $4.00.

Front

How do you calculate the total cost of multiple items?

Back

Total Cost = (Cost of One Item x Number of Items) + Delivery Charges.

Front

What is the process to find out how much more money is needed to reach a goal?

Back

Subtract the amount already raised from the total goal amount.

Front

How do you calculate the amount each person needs to contribute?

Back

Amount per Person = Total Amount Needed / Number of People.

Front

What is the formula to calculate the total dues collected from members?

Back

Total Dues = Number of Members x Dues per Member.

Front

If 8 out of 15 members paid their dues, how do you find out how many are left?

Back

Remaining Members = Total Members - Members Who Paid.

Front

How do you calculate the remaining balance after purchases?

Back

Remaining Balance = Initial Amount - Total Cost of Purchases.