Name _______________________ Date __________________ Tape Diagrams Finding the Part When Given the Whole Amount and the Percent Guided Notes Name _______________________ Date __________________ Tape Diagrams What is 20% of 30? Example 1: At Lincoln Middle School, 45% of the students bring lunch from home out of 300 students. How many students bring lunch from home? Example 2: Ed bought a pair of shoes that was on sale for 40% off. If the shoes originally cost $50.00, how much money did he save ? How much did he pay for the shoes? Using an Expression This means 𝟐𝟎% 𝒐𝒇 𝟑𝟎 𝟐𝟎 𝟏𝟎𝟎 ×𝟑𝟎= 𝟔𝟎𝟎 𝟏𝟎𝟎 =𝟔 𝒐𝒓 𝟎.𝟐𝟎×𝟑𝟎=𝟔 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% TeacherTwins©2015

Name _______________________ Date __________________ Finding the Part When Given the Whole Amount and the Percent Guided Notes Name _______________________ Date __________________ Using an Expression What is 20% of 30? This means 𝟐𝟎% 𝒐𝒇 𝟑𝟎 𝟐𝟎 𝟏𝟎𝟎 ×𝟑𝟎= 𝟔𝟎𝟎 𝟏𝟎𝟎 =𝟔 𝒐𝒓 𝟎.𝟐𝟎×𝟑𝟎=𝟔 Example 1: At Lincoln Middle School, 45% of the students bring lunch from home out of 300 students. How many students bring lunch from home? Example 2: Ed bought a pair of shoes that was on sale for 40% off. If the shoes originally cost $50.00, how much money did he save ? What did he pay for the shoes. Practice Solve each problem. Round to the nearest percent if necessary. 1). Twenty percent of high school students are in band. If there are 1,235 high school students how many are in band? 2). Kyle bought a video game for 25% off. If the game cost $64, how much money did he save? 3). Stowe made 72% of his shots during a basketball game. If he took 24 shots, how many shots did he make? 4). Kim missed 30% of the questions on her math test. If the test had 20 questions, how many questions did she get correct? TeacherTwins©2015