Mayansky/Finizio
Gautier/Finizio
Algeo I
Period 1
Quiz Date: 3/14/06
Section 7.5 Study Guide
Percents
[pic]
Sample Problem #1
Express the following number as a percent.
[pic]
[pic]
[pic]
Sample Problem #2
Express the following as a fraction in simplest form.
[pic]
[pic]
[pic]
[pic]
Sample Problem #3
Express the following as a decimal
[pic]
[pic]
[pic]
Sample Problem #4
Solve
[pic] of [pic] is what number?
[pic]or[pic]
is/A = n
of/B = 300
%/Rate = 32
[pic]
[pic]
[pic]
[pic]
Practice Problems
|Write as a Percent |Write as a Percent |Write as a Percent |Write as a Percent |
|.0084 |25 |.02 |.6 |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
|Write as a fraction in simplest |Write as a fraction in simplest |Write as a fraction in simplest |Write as a fraction in simplest |
|form. |form. |form. |form. |
|84% |63% |8.54% |[pic] |
| | | | |
| | | | |
|Write as a Decimal |Write as a Decimal |Write as a Decimal |Write as a Decimal |
|4% |150% |12.5% |1684% |
| | | | |
| | | | |
|Write as a fraction in simplest |Write as a fraction in simplest |Write as a fraction in simplest |Write as a fraction in simplest |
|form. |form. |form. |form. |
|635% |10% |44% |18% |
| | | | |
| | | | |
| | | | |
Practice Problems
Continued
Solve
|32% of 300 is what number? |1% of 3200 is what number? |
| | |
| | |
| | |
| | |
| | |
| | |
|What percent of 45 is 7.2? |110% of 30 is what number? |
| | |
| | |
| | |
| | |
| | |
| | |
|9.2% of 180 is what number? |[pic] of 500 is what number? |
| | |
| | |
| | |
| | |
| | |
|15 is 25% of what number? |20% of 10 is what number? |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
|25% of 20 is what number? |What percent of 25 is 15? |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
|20% of what number is 15? |80% of what number is 56? |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
| | |
-----------------------
Important Information/Formulas
1. When changing a Percent to a Decimal: Divide by 100
2. When changing a Percent to a Fraction: Divide by 100
3. When changing a Decimal to a Percent: Multiply by 100
4. When changing a Fraction to a Percent: Multiply by 100
Step #1: Recognize what you are trying to do. In this problem you are being asked to change a decimal to a percent. When changing a decimal to a percent the formula says to multiply by 100.
Step #2: Set up your multiplication.
Final Answer
Step #1: Recognize what you are trying to do. In this problem you are being asked to change a percent to a fraction. When changing a percent to a fraction the formula says to divide by 100.
Step #2: Set up your Division.
*Remember you are being asked to convert a percent to a fraction so make sure that your answer is in fractional form.
Step #3: Write the fraction in simplest form
Final Answer
Step #1: Recognize what you are trying to do. In this problem you are being asked to change a percent to a decimal. When changing a percent to a decimal the formula says to divide by 100.
Step #2: Set up your Division.
Final Answer
Step #1: Using one of the following formulas, label each part of your formula.
Step #2: Set up a proportion using your formula and you information
Step #3: Solve the proportion for n by cross multiplying.
Final Answer
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.