Chapter 7 Terms Flashcards
The word percent comes from the Latin word
per centum
per centum translates into…
Per 100
this symbol %bis used to denote what
percent
Percent To Decimal
Decimal 2 Place values Left
Decimal to Percent
Decimal 2 Place values Right
when writing a percent as a fraction it is usually written in ____ ____
Simplest Form
Percent to Fraction
1)%/B x 1/1002)Simplify
How to change a mixed fraction percent into a fraction
1) Remove the % and convert the mixed fraction into a improper fraction 2) Multiply times 0.01
Fraction to Percent
A/B x 100/1
Percent Decimal Combo to Fraction
1) %/B x 1/1002) Move Decimal point of Numerator to make it a whole # and adjust Denom. accordingly.
In a percent problem the word “of” means…
Multiplication
In a percent problem the word “is” means…
Equals
In a percent problem the word “What, or some equivalent” means…
the variable
When solving percent problems there are three factors, they are
The Percent, The Base, The Amount.
The typical formula for for percent equations are…
Percent x Base = Amount (or any variation)
In order to solve a Percent Equation, ______ the equation and then convert the percent to a _____ and solve
Translate/Decimal
After solving the equation if the variable was the percentage dont forget to convert from _____ to _____
Decimal/Percent
One ratio which represents a part of a quantity that compares to the whole quantity using a percent.
Percent Proportion
What is the Formula for a Percent Proportion
amount/base=%/100
To identify the Amount in word problems…
Look for the quantity compared to the whole
To identify the Base in word problems…
Look for what is followed after the word ‘of’
To Identify the Percent in word problems…
Look for the word “Percent” or the “% sign”
What are the two ways to solve a percent problem?
A “Percent Equation”or A Percent Proportion
After making a percent proportion you can ______ the proportion before solving.
Simplify
Formula for Percent increse
Percent increse = Amount of increse / original amount
Formula for Percent decrese
pecent decrese= amount of decrese/ original amount
After you solve for the percent increse/decrese the answer will be in_____ form. Dont forget to convert it to ______ form.
Decimal/ Percent
Formula for sales tax
sales tax = tax rate x purchase price Total= Purchase price= sales tax
The formula for commisson
Commission = Commission Rate x Sale
Formula Discount + Sale Price
Amount of discount= Discount rate x Original Price Sale Price= Original price - Amount of discount
Interest
Money charged or earned on money
Principal Amount (principal)
The amount loaned or invested
Interest Rate
The percent used in computing the interest
Simple interest formula
Simple interest = principal x rate x time
Total amount formula
Total amount =principal + interest
Compound interest
Interest that is computed based on the total amount
