Percent to Decimal
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This document provides instructions for converting percentages to decimals in 2 steps: 1) Remove the % sign 2) Move the decimal point two places to the left It then demonstrates this process for converting several percentages to decimals, such as 97% to 0.97, and explains that percentages and decimals represent equivalent values. Converting a percentage to a decimal simply involves multiplying the percentage by 100, which does not change the value.
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December 10.1, 2014
The document provides an overview of a math class that focuses on fractions, decimals, and percents. It includes:
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Due to the amount of work students will have over winter break and the topics not being fully covered by November 24th, the scheduled Khan Academy for that date has been cancelled. The November 24th topics will now be due on December 1st, and the December 1st topics will be pushed back to December 8th.
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The document discusses using double line graphs and tape diagrams to solve percentage problems. It provides an example of using a double line graph to find 25%, 50%, and 75% of 1,400. Students are then asked to use a double line graph to solve problems such as finding 20% and 80% of 400. The document then introduces using tape diagrams to find percentages, such as finding the original price of an item after a 20% discount. Students are asked to use tape diagrams to solve percentage increase and decrease problems.
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