January 6, 2009Math 201 REVIEW:Converting fractions to decimals In a word…DIVIDE! Converting decimals to percents In two words…Place Value!

Objective: Students will be able to convert fractions to percents Aim: In what ways can division and place value help us to convert fractions to percents? NYS Mathematics Standards: 6.N.11, 6.N.21 Prior Knowledge: Convert 2/5 to a decimal Convert.4 to a percent January 6-7, 2010 Math 201

Mini-lesson: To convert a fraction to a percent: First convert the fraction to a decimal, then convert the decimal to a percent FRACTION DECIMAL PERCENT

Example: Convert the fraction 9/20 to a percent 1.Change 9/20 to a decimal, by dividing 20 into 9 2. Change the decimal to a percent, by moving the decimal point two places to the right.

Example: Convert the fraction 6/25 to a percent 1.Change 6/25 to a decimal, by dividing 25 into 6 2. Change the decimal to a percent, by moving the decimal point two places to the right.

Example: Convert the fraction 3/8 to a percent 1.Change 3/8 to a decimal, by dividing 8 into 3 2. Change the decimal to a percent, by moving the decimal point two places to the right.

If we wanted to convert a percent to a fraction, how do you think we could do that? What steps could we follow? Example: 75% Question: What about a percent to a decimal? Example:65% ____________________________________________________________

What about a decimal to a fraction? Example:0.125(Think: place value) ________________________________________________________________ Independent Practice:Worksheet handout, problems 1,4 and 7 Homework: Finish problems 2,3,5,6,8 and 9