5 Minute Check Find. Round to the nearest tenth, if necessary. Complete in your notes. 1. What number is 25% of 180? 2. $3 is what percent of $40? 3. 9 is 45% of what number? 4. What percent of 60 is 12?

5 Minute Check Find. Round to the nearest tenth, if necessary. Complete in your notes. 1. What number is 25% of 180?

5 Minute Check Find. Round to the nearest tenth, if necessary. Complete in your notes. 1. What number is 25% of 180? ? 180 = 25 100 ? 180 = 1 4 180 · 1 ÷ 4 = 45

5 Minute Check Find. Round to the nearest tenth, if necessary. Complete in your notes. 2. $3 is what percent of $40?

5 Minute Check Find. Round to the nearest tenth, if necessary. Complete in your notes. 2. $3 is what percent of $40? $3 $40 = ? 100 3 · 100 ÷ 40 = 7.5%

5 Minute Check Find. Round to the nearest tenth, if necessary. Complete in your notes. 3. 9 is 45% of what number?

5 Minute Check Find. Round to the nearest tenth, if necessary. Complete in your notes. 3. 9 is 45% of what number? 9 ? = 45 100 9 ? = 9 20 9 · 20 ÷ 9 = 20

5 Minute Check Find. Round to the nearest tenth, if necessary. Complete in your notes. 4. What percent of 60 is 12?

5 Minute Check Find. Round to the nearest tenth, if necessary. Complete in your notes. 4. What percent of 60 is 12? 12 60 = ? 100 1 5 = ? 100 1 · 100 ÷ 5 = 20

Lesson 7.2.4 The Percent Equation Thursday, Jan 29 Lesson 7.2.4 The Percent Equation

Solve One-Step Inequalities

Solve One-Step Inequalities

The Percent Equation Objective: To use the percent equation to solve percent problems.

The Percent Equation You can use the percent equation to solve problems that involve percent.

The Percent Equation part = percent (in decimal form) x whole

The Percent Equation What number is 12% of 150? Round to the nearest tenth. Are we looking for the part, whole or percent?

The Percent Equation What number is 12% of 150? Round to the nearest tenth. part = percent (in decimal form) x whole

The Percent Equation What number is 12% of 150? Round to the nearest tenth. part = percent (in decimal form) x whole part =

The Percent Equation What number is 12% of 150? Round to the nearest tenth. part = percent (in decimal form) x whole part = 0.12 x

The Percent Equation What number is 12% of 150? Round to the nearest tenth. part = percent (in decimal form) x whole part = 0.12 x

The Percent Equation What number is 12% of 150? Round to the nearest tenth. part = percent (in decimal form) x whole part = 0.12 x 150

The Percent Equation What number is 12% of 150? Round to the nearest tenth. part = percent (in decimal form) x whole 150 18 =0.12 x 150 x .12 300 150 x.12 300 1500 18.00

The Percent Equation What number is 6% of 200? Round to the nearest tenth. part = percent (in decimal form) x whole Do this on your own.

The Percent Equation What number is 6% of 200? Round to the nearest tenth. part = percent (in decimal form) x whole 12 = 0.06 x 200 200 x.06 12.00

The Percent Equation What number is 72% of 50? Round to the nearest tenth. part = percent (in decimal form) x whole Do this on your own.

The Percent Equation What number is 72% of 50? Round to the nearest tenth. part = percent (in decimal form) x whole 36 = 0.72 x 50 50 x.72 100 3500 36.00

The Percent Equation 30 is what percent of 150? Round to the nearest tenth. part = percent (in decimal form) x whole What are we looking for?

The Percent Equation 30 is what percent of 150? Round to the nearest tenth. part = percent (in decimal form) x whole 30 = p · 150

The Percent Equation 30 is what percent of 150? Round to the nearest tenth. part = percent (in decimal form) x whole 30 = p · 150 150 150

The Percent Equation 30 is what percent of 150? Round to the nearest tenth. part = percent (in decimal form) x whole 30 = p · 150 150 150 1 = p 5

The Percent Equation 30 is what percent of 150? Round to the nearest tenth. part = percent (in decimal form) x whole 30 = p · 150 150 150 1 = p 5 20% = p .2 5)1.0 -10

The Percent Equation 22 is what percent of 40? Round to the nearest tenth. part = percent (in decimal form) x whole Do this on your own.

The Percent Equation 22 is what percent of 40? Round to the nearest tenth. part = percent (in decimal form) x whole 22 = p · 40 40 40 11 = p 20 55% = p .55 20)11.00 -100 100

The Percent Equation 14.4 is what percent of 96? part = percent (in decimal form) x whole Do this on your own.

The Percent Equation 14.4 is what percent of 96? part = percent (in decimal form) x whole 14.4 = p · 96 96 96 15% = p .15 96)14.40 -96 480

The Percent Equation 16 is what percent of 68? Round to the nearest tenth. part = percent (in decimal form) x whole Do this on your own.

The Percent Equation 16 is what percent of 68? Round to the nearest tenth. part = percent (in decimal form) x whole 16 = p · 72 68 72 4 = p 17 23.5% = p .2352 17)4.00 -34 60 -51 90 -85 50

The Percent Equation 3 is 12% of what number? part = percent (in decimal form) x whole Do this on your own.

The Percent Equation 3 is 12% of what number? part = percent (in decimal form) x whole

The Percent Equation 3 is 12% of what number? part = percent (in decimal form) x whole 3 = .12 · w

The Percent Equation 3 is 12% of what number? part = percent (in decimal form) x whole 3 = .12 · w .12 .12

The Percent Equation 3 is 12% of what number? part = percent (in decimal form) x whole 3 = .12 · w .12 .12 25 = w 25. 12)300.0 -24 60

The Percent Equation 55 is 11% of what number? part = percent (in decimal form) x whole Do this on your own.

The Percent Equation 55 is 11% of what number? part = percent (in decimal form) x whole 55 = .11 · w .11 .11 500 = w 500. 11)5500.0 -55

The Percent Equation 18 is 15% of what number? part = percent (in decimal form) x whole Do this on your own.

The Percent Equation 18 is 15% of what number? part = percent (in decimal form) x whole 18 = .15 · w .15 .15 120 = w 120. 15)1800.0 -15 30

The Percent Equation A survey found that 25% of people aged 18-24 gave up their home phone and only use a cell phone. If 320 people only use a cell phone, how many were surveyed? Do this on your own.

The Percent Equation A survey found that 25% of people aged 18-24 gave up their home phone and only use a cell phone. If 320 people only use a cell phone, how many were surveyed? part = percent (in decimal form) x whole 320 = .25 · w .25 .25 1280 people were surveyed 1280. 25)32000.0 -25 70 - 50 200

The Percent Equation A local bakery sold 60 loaves of bread in one day. If 65% of these were sold in the afternoon, how many were sold in the afternoon?

The Percent Equation A local bakery sold 60 loaves of bread in one day. If 65% of these were sold in the afternoon, how many were sold in the afternoon? part = percent (in decimal form) x whole part = .65 · 60 39 were sold in the afternoon 60 x .65 300 3600 39.00

The Percent Equation Ruben bought 6 new books for his collection. This increased his collection by 12%. How many books did he have before his purchases?

The Percent Equation Ruben bought 6 new books for his collection. This increased his collection by 12%. How many books did he have before his purchases? part = percent (in decimal form) x whole 6 = .12 · w .12 .12 He had 50 books before his purchase. 50. 12)600.0 -50

The Percent Equation A store sold 550 video games during the month of December. If this made up 12.5% of its yearly video sales, how many video games did the store sell all year? part = percent (in decimal form) x whole

The Percent Equation A store sold 550 video games during the month of December. If this made up 12.5% of its yearly video sales, how many video games did the store sell all year? part = percent (in decimal form) x whole 550 = .125 · w .125 .125 4400 were sold all year. 4400. 125)550000.0 -500 500

The Percent Equation Johanna’s parents give her $10 per week for lunch money. If you need to find a percent of a number, explain how you can predict whether the part will be less than, greater than, or equal to the whole number.

Percent < 100, the part < whole Percent = 100, the part = whole The Percent Equation Johanna’s parents give her $10 per week for lunch money. If you need to find a percent of a number, explain how you can predict whether the part will be less than, greater than, or equal to the whole number. Percent < 100, the part < whole Percent = 100, the part = whole Percent > 100, the part > whole

The Percent Equation Complete Mid-Chapter Check on Page 140 Bring to my desk when complete. Agenda Notes Homework Practice 7.2.4 Due Friday, Jan 30 Mid-Chapter 7.2 Quiz - Friday, Jan 30