5 Minute Check
Complete in your notes. 1. Write 0.35 as a percent.
5 Minute Check Complete in your notes. 1. Write 0.35 as a percent. To convert a decimal to a percent, multiply by 100 and add the percent sign · 100 = 35%
5 Minute Check Complete in your notes. 2. Write 8.5% as a decimal.
5 Minute Check Complete in your notes. 2. Write 8.5% as a decimal. To convert a percent to a decimal, divide by 100 and remove the percent sign. 8.5% ÷ 100 = 0.085
5 Minute Check Complete in your notes. 3. Write as a percent.
5 Minute Check Complete in your notes. 3. Write as a percent · 100 = 72.5%
5 Minute Check
Tuesday, Jan 27 Lesson 7.2.1/7.2.2 Estimating and Finding the Percent of a Number
Solve One-Step Inequalities
Estimating and Finding the Percent of a Number Objective: To estimate and find the percent of a number.
Estimating and Finding the Percent of a Number When estimating with percents, choose comparable numbers that can be mentally calculated. Comparable numbers are close to the original number, many times they end in a “5” or “0”.
Estimating and Finding the Percent of a Number There are several different methods to find the percent of a number. Two are as follows:
Estimating and Finding the Percent of a Number There are several different methods to find the percent of a number. To find the percent of a number, convert the percent to a decimal and multiply. i.e 43% of 50 is.43 · 50 The easier method if you have a calculator.
Estimating and Finding the Percent of a Number There are several different methods to find the percent of a number. To find the percent of a number, convert the percent to a decimal and multiply. To find the percent of a number, convert the percent to a fraction, set up a proportion and solve.
Estimating and Finding the Percent of a Number Find 12% of 307. What comparable numbers would make this able to be done mentally? Put your pencil down!
Estimating and Finding the Percent of a Number Find 12% of 307. What comparable numbers would make this able to be done mentally? Find 10% of 300.
Estimating and Finding the Percent of a Number Find 12% of 307. What comparable numbers would make this able to be done mentally? Find 10% of 300. To find 10% of any number move the decimal place one place to the left.
Estimating and Finding the Percent of a Number Find 12% of 307. About 30 What comparable numbers would make this able to be done mentally? Find 10% of 300. To find 10% of any number move the decimal place one place to the left.
Estimating and Finding the Percent of a Number Find 12% of 307. About 30 Actual?
Estimating and Finding the Percent of a Number Find 12% of 307. About 30 Decimal Method 307 x two decimal places
Estimating and Finding the Percent of a Number
Find 25% of 180. Estimate? Put your pencil down!
Estimating and Finding the Percent of a Number
Find 25% of 180. About 40 Decimal Method 180 x
Estimating and Finding the Percent of a Number
Find 40% of 70. Estimate? Put your pencil down!
Estimating and Finding the Percent of a Number
Find 40% of x
Estimating and Finding the Percent of a Number Find 122% of 75. Estimate? Put your pencil down!
Estimating and Finding the Percent of a Number Find 122% of 75. Estimate? Since the percent is about 20% larger than 100, then the answer will be about 20% larger than 75. What is 10% of 75?
Estimating and Finding the Percent of a Number Find 122% of 75. Estimate? What is 10% of 75? 7.5 Double that and add to 75.
Estimating and Finding the Percent of a Number Find 122% of 75. Estimate? Since the percent is 20% larger than 100, then the answer will be 20% larger than 75. What is 10% of 75? 7.5 Double that and add to
Estimating and Finding the Percent of a Number Find 122% of 75. About 90 Actual?
Estimating and Finding the Percent of a Number Find 122% of 75. About x
Estimating and Finding the Percent of a Number Find 148% of 28. Estimate?
Estimating and Finding the Percent of a Number Find 148% of 28. Estimate? Since the percent is about 50% larger than 100, then the answer will be about 50% larger than 28. What is 50% of 28?
Estimating and Finding the Percent of a Number Find 148% of 28. Estimate? Since the percent is about 50% larger than 100, then the answer will be about 50% larger than 28. Add it to 28.
Estimating and Finding the Percent of a Number Find 148% of 28. About 42 Actual?
Estimating and Finding the Percent of a Number Find 148% of 28. About x
Estimating and Finding the Percent of a Number Find 160% of 35. Estimate?
Estimating and Finding the Percent of a Number Find 160% of 35. About 53 Actual?
Estimating and Finding the Percent of a Number Find 160% of x
Estimating and Finding the Percent of a Number Find 0.5% of 62. Estimate?
Estimating and Finding the Percent of a Number Find 0.5% of 62. Estimate? What is 1% of 60?
Estimating and Finding the Percent of a Number Find 0.5% of 62. Estimate? What is half of that?
Estimating and Finding the Percent of a Number Find 0.5% of 62. About 0.3 Actual? Do not forget how to convert a percent to a decimal.
Estimating and Finding the Percent of a Number Find 0.5% of 62. About x % = 0.005
Estimating and Finding the Percent of a Number
The languages spoken in a particular town is shown in the graph below. If there are 800 people in the town, how many speak Spanish?
Estimating and Finding the Percent of a Number The languages spoken in a particular town is shown in the graph below. If there are 800 people in the town, how many speak Spanish? 800 x
Estimating and Finding the Percent of a Number Suppose there are 20 questions on a multiple-choice test. If 25% of the answers are choice B, how many are not choice B?
Estimating and Finding the Percent of a Number Suppose there are 20 questions on a multiple-choice test. If 25% of the answers are choice B, how many are not choice B? 20 x
Estimating and Finding the Percent of a Number If 275 students took the survey below, how many can be expected to have 3 television each in their house?
Estimating and Finding the Percent of a Number If 275 students took the survey below, how many can be expected to have 3 television each in their house? 275 x About 63 students.
Estimating and Finding the Percent of a Number Mr. Sudimack earned a 4% commission on a sale of a hot tub that cost $3,755. How much did he earn?
Estimating and Finding the Percent of a Number Mr. Sudimack earned a 4% commission on a sale of a hot tub that cost $3,755. How much did he earn? 3755 x
Estimating and Finding the Percent of a Number Johanna’s parents give her $10 per week for lunch money. Suppose you add 10% of a number to the number, and then you subtract 10% of the total. Is the result greater than, less than or equal to the original number? Explain.
Estimating and Finding the Percent of a Number Johanna’s parents give her $10 per week for lunch money. Suppose you add 10% of a number to the number, and then you subtract 10% of the total. Is the result greater than, less than or equal to the original number? Explain. Less the original number. Subtracting 10% of the total, since it is a larger number, is greater. (10% of 90) (10% of 99) = 99 – 9.9 = 89.1
Estimating and Finding the Percent of a Number Johanna’s parents give her $10 per week for lunch money. When is it easiest to use the proportion method to find the percent of a number?
Estimating and Finding the Percent of a Number Johanna’s parents give her $10 per week for lunch money.
Estimating and Finding the Percent of a Number Agenda Notes Homework – Homework Practice 7.2.1/7.2.2 Due Wednesday, Jan 28 Mid-Chapter 7.2 Quiz - Friday, Jan 30