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Thursday, May 17, 2012

Interactive Math Lesson - Finding the Percentage (Activinspire Flipchart)

Title of the lesson: Finding the Rate when the Percentage and Base are Given
File: Interactive Activinspire Flipchart
Grade Level: 5-6

How to solve for the percentage:
A. Using a Proportion
Set up a proportion that uses the percent over 100.
2. Cross multiply to write an equation.
3. Solve the equation.
To set up your proportion, think, "IS over OF equals PERCENT over 100".
The formula is P/B = R/100

B. Using a Decimal
1. Change the percent to a decimal.
2. Multiply that decimal by the number you are finding the percent of.
Use the formula: R x B = P

Teachers pls. watch this video first before downloading.
Download Finding the Rate when the Percentage and Base are Given

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