Finding the Amount of Change and Final Amount

This video tutorial teaches how to calculate the amount of change and the final amount given the original amount and the percent of change. It covers three main strategies: using diagrams, proportions, and equations. The video also addresses common misconceptions about percent change, such as confusing the percent of change with the amount of change or the final amount. Through examples, the tutorial demonstrates how to apply each method effectively, ensuring a clear understanding of the concepts.

What is the first step in solving a proportion?

• Use cross products to find equivalence

• Add the numbers on both sides

• Multiply the numbers on both sides

• Subtract the smaller number from the larger one

If a school's enrollment increased by 12%, what does this percentage represent?

• The total number of students after the increase

• The original number of students

• The amount of change in enrollment

• The final number of students

How do you calculate the new number of boys in the chess club using diagrams?

• Divide the original number by 25%

• Subtract 25% from the original number

• Add 25% of the original number to itself

• Multiply the original number by 100

What is the purpose of using proportions in calculating percent change?

• To find the original amount

• To determine the percentage of the final amount

• To calculate the amount of change and add it to the original

• To subtract the change from the final amount

When using equations, how do you convert a percentage to a decimal?

• Add 100 to the percentage

• Divide the percentage by 10

• Multiply the percentage by 100

• Divide the percentage by 100