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How do you add or multiply percentages?

11WE.A1.1

Simple interest

Simple Interest — Word Problem

Basic Concepts of Simple Interest – Word Problem

Borrowing Money for More Than One Year  – Word Problem

Investigate the Advantages of Borrowing Money  – Word Problem

11WE.A1.2

Taxes, discounts, tips and more

Discounts — Word Problem

Taxes — Word Problem

Percentage - Applying a Discount Price– Word Problem

Percentage - Applying a Discount Percent – Word Problem

Percentage - Applying a Tax Total – Word Problem

Percentage - Applying a tax Percent – Word Problem

11WE.A1.4

auto-gen

Arithmetic sequences

Arithmetic series

Arithmetic series formula

11WE.A2.2

Rectangular shape related questions in linear equations

Percent of a number

Percent of a Number

percent of a number – Word Problem

Percent of a Number  Fraction Percent

Percent of a Number Integer Percent 

Percent of a number number With Decimal Percent 

Percent of a Number  Three Digits Number Percent

11WE.A3.4

Adding and multiplying percents

Add and Multiply Percents — Word Problem

Add and Multiply Percents – Word Problem

11WE.A3.6

Money related questions in linear equations

11WE.A3.8

Rates

Find the Biggest Rate 

Find the Unit Price 

Unit Rate Fill in Box

Find the Quickest Rate 

Unit Rate

11WE.B2.1

Geometric sequences

Geometric series

Geometric Series

11WE.B2.2

Finance: Compound interest

Finance: Compound Interest

11WE.C1.7

Applications of quadratic functions

11WE.C2.1

Scale diagrams

11WE.C2.4

Distance and time related questions in linear equations

Grade 11 Mathematics for Work and Everyday Life, Workplace Preparation (MEL3E)

A. Earning and Purchasing

B. Saving, Investing, and Borrowing

C. Transportation and Travel

math

- Hi, welcome to this question right here. So we&apos;ve got a little application right here, and you'll probably be very familiar with this. So let's say you go buy one video game that's $25. That's kind of cheap right? Up to 12% sales tax, okay? So you decided you want to get four video games in total and you're wondering how much you had to pay after tax. Okay? 
So figure it out. If one game is $25, okay? For every game you're buying is $25 right? So it's quite obvious that if you're buying four games, why not just take the four games and times the $25 that you're buying, right? So that gives you $100 that you have to pay. Right? 
But here in Canada or wherever you go there's always some kind of sales tax, 8%, 
10%, 5% right? So the games are just 100%-- actually the games are just $100, but you have to pay the 12% of the sales tax. So what do you do? 
Well multiply them together to figure out how much is the 12% of that $100. Now 12% 
of 100 is easy to calculate, but they just show to work. Twelve percent, if you're going to get the decimal form out, you need to take your decimal here and move two to the left. That gives you 0.012 I'm sorry, 0.12 just like that. So now I can take the 0.12 and then multiply that $100, okay? It turns out to be just $12 by the way because 100 is easy to work with. Just let me double check, it is the $12. Now, this is tax okay? This is your sort of tax, this is actually tells you it's just your tax that you're paying. All right, you bought $100 worth of video games and you had to pay $12 for the tax. So how much the four video games after tax? Well it's simple. There's your video game, $100 plus the tax you're paying, that's $12 dollars, the total would be just $112, and that's your final answer right there. Thanks for watching.

Knowing how to add and multiply percentages is very useful in our daily life. Do you know how much sales tax you are going to pay for your new purchases? What is the sale price after discount? How do banks calculate interest? We will learn more in this section.

Applications of percents

Percents, fractions, and decimals