Warm Up 1. 14,000 is 2 % of what number? 2. 39 is 13% of what number? 3. 37 % of what number is 12? 4. 150% of what number is 189? 560,000 300 32 1 2 126.

Slides:



Advertisements
Similar presentations
Find the amount of the markup.
Advertisements

EXAMPLE 1 Finding a Sale Price You are shopping for a guitar and find one with an original price of $160. The store is offering a 30% discount on all guitars.
Lesson 1: Buying Furniture and Appliances Consumer Math p
6-4 Percent of Change Percent of change = amount of change original amount.
8.4 Percent of Increase and Decrease. Percent change is the ratio of the amount of change to the original amount. Percent increase describes how much.
NS1.6 Calculate the percentage of increase and decrease of a quantity. NS1.7 Solve problems that involve discounts, markups, commissions, and profit and.
warm-up Handout Correcting pen out Monday & Tuesday – wk 2
EXAMPLE 1 Finding a Sale Price You are shopping for a guitar and find one with an original price of $160. The store is offering a 30% discount on all guitars.
adjectives as you can think of that describes that word.
Percent Increase and Decrease 6-4 Students will be able to determine percent decrease. Warm Up 1. 14,000 is 2 % of what number? is 13% of what number?
Over Lesson 7–5 A.A B.B C.C D.D 5-Minute Check 6 A.9.4% B.1.06% C.5.7% D.6% Taneesha bought a laptop for $ including tax. The laptop had a price.
Ratio, Percent, Proportion
Learn to solve problems involving percent of change.
Warm Up Solve % of what number is 6? 2. What percent of 20 is 8? 3. What is 80% of 60? is what percent of 200? 60 40% 48 Course Percent.
Percent Increase and Decrease
Notes 29 Percent of Change 6-4.
HW # 69 - p. 296 & 297 # even AND p. 300 & 301 # 5-12 all, & 15 Warm up Joseph, Ana, Lena, and George chipped in money for a friend’s gift. The gift.
Why??  Percents are all around us! Sales and discounts shopping Sales Tax Income Taxes Tips on restaurant bills Etc…  When doing problems with % remember.
Evaluating Algebraic Expressions 6-5 Applying Percent of Increase and Decrease Warm Up Warm Up California Standards California Standards Lesson Presentation.
Warm ups: Eric bought a pair of shoes originally priced at $95 for 45% off. He paid $52.25 not including tax. Which equation shows how Eric.
Percent of Change Vocabulary percent of change percent of increase
Percent Increase and Decrease 6-4 Students will be able to determine percent increase. Warm Up 1. 14,000 is 2 % of what number? is 13% of what number?
Percent Increase and Decrease
THESE SHOULD NOT BE DIFFICULT FOR YOU: 1. Find 30% of Find 28% of 60. Solve for x = x(50) = x(86) is what percent of 80? 6.
6-5 Percent of Change Warm Up Problem of the Day Lesson Presentation
Holt CA Course Percent of Change NS1.4 Calculate given percentages of quantities and solve problems involving discounts at sales, interest earned,
Course Percent Increase and Decrease 6-5 Percent Increase and Decrease Course 3 Warm Up Warm Up Problem of the Day Problem of the Day Lesson Presentation.
6-6 Percent of Change Warm Up Problem of the Day Lesson Presentation
Percent of Increase and Decrease 6-5 Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson.
Splash Screen. Lesson Menu Five-Minute Check (over Lesson 7–5) Then/Now New Vocabulary Key Concept: Percent of Change Example 1: Find the Percent of Change.
Pre-Algebra 8-4 Percent Increase and Decrease Our Learning Goal Students will be able to determine and construct fractions, decimals, and percents by understanding.
Holt CA Course Percent of Change Warm Up Warm Up California Standards Lesson Presentation Preview.
NS1.6 Calculate the percentage of increase and decrease of a quantity.
6-6 Percent of Change Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes.
Splash Screen. Then/Now You have already solved real-world problems using the percent equations. (Lesson 7–5) Find percent of increase and decrease. Solve.
Section % of what number is 75? 2. What percent of 25 is 4? 3. If you buy a shirt that was originally $45 but it is on clearance for 25% off,
Percent of Change Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes.
Percent Proportions & Equations. A percent is a ratio that compares a number to 100. A commission is a percent of the amount of your sales. A percent.
EXAMPLE 1 Finding a Sale Price Clothing You buy a pair of jeans that is 30% off the original price of $29. What is the sale price? STEP 1 Find the amount.
8-4 Percent Increase and Decrease Course 3 Warm Up Warm Up Problem of the Day Problem of the Day Lesson Presentation Lesson Presentation.
Warm Up Solve % of what number is 6? 2. What percent of 20 is 8? 3. What is 80% of 60? is what percent of 200? 60 40% 48 Course Percent.
PERCENT OF CHANGE Mrs. Herron. I CAN…  Solve problems involving percent of change.
Grade Lesson 14. Notes Lesson 15 Percent of Change.
Estimating With Percents Lesson 6-8. Sales Tax Round the cost of a given item to the nearest dollar. Multiply that estimate by the decimal version of.
Markup – the amount of money a store increases the price of the goods above what they pay for it. Wholesale price – the amount of money a store pays for.
RED 2012 BOOK. 4.3 Activity You can find 10% and multiply by the correct amount.  Ex: 40% off of $50.00  10% is $5.00.  $5.00 X 4 (for 40%) = $20.00.
Holt CA Course Percent of Change NS1.4 Calculate given percentages of quantities and solve problems involving discounts at sales, interest earned,
PERCENT OF CHANGE. WHAT IS THE PERCENT OF CHANGE? The amount stated as a percent that a number increases or decreases.
Percent of Change Vocabulary percent of change percent of increase
Percent Increase and Decrease
Learn to find percent increase and decrease.
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Percent of Change Vocabulary percent of change percent of increase
8.4 Percent of Increase and Decrease
Daily Warm-Up (I do) ALCOS # 3 5th grade
EXAMPLE 1 Finding a Sale Price
6-5 Percent of Change Warm Up Problem of the Day Lesson Presentation
Percent of Change Vocabulary percent of change percent of increase
Math 5-7: Percent of Change
Round the discount to the nearest penny.
Percent Increase & Decrease
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Learn to solve problems involving percent of change.
6-6 Percent of Change Warm Up Problem of the Day Lesson Presentation
Round the discount to the nearest penny.
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Problem Solving with Proportional Relationships
Percent Increase and Decrease
Percent Change: Percent Increase / Percent Decrease
Presentation transcript:

Warm Up 1. 14,000 is 2 % of what number? is 13% of what number? % of what number is 12? % of what number is 189? 560,

Lesson 2 Percent Increase and Decrease

Percents can be used to describe a change. Percent of change is the ratio of the amount of change to the original amount. Percent of increase describes how much the original amount increases. Percent of decrease describes how much the original amount decreases. amount of change original amount percent of change =

Find the percent of increase or decrease from 16 to 12. Class Example This is a percent of decrease. 16 – 12 = 4First find the amount of change. amount of decrease original amount 4 16 Set up the ratio. Find the decimal form. Write as a percent. = 0.25 = 25% 4 16 From 16 to 12 is a 25% decrease.

Find the percent increase or decrease from 45 to 54. This is a percent of increase. 54 – 45 = 9First find the amount of change. amount of increase original amount 9 45 Set up the ratio. Partner Practice Find the decimal form. Write as a percent. = 0.20 = 20% 9 45 From 45 to 54 is a 20% increase.

Find the percent increase or decrease from 50 to 65. This is a percent of increase. Individual Practice 65 – 50 = 15First find the amount of change. amount of increase original amount Set up the ratio. Find the decimal form. Write as a percent. = 0.30 = 30% From 50 to 65 is a 30% increase.

When Jim was exercising, his heart rate went from 72 beats per minute to 98 beats per minute. What was the percent increase to the nearest tenth of a percent? Class Example Set up the ratio. 98 – 72 = 26 First find the amount of change. amount of increase original amount Find the decimal form. Write as a percent.   36.1% From 72 to 98 increases by about 36.1%.

In 2005, a certain stock was worth $1.25 a share. In 2006, the same stock was worth $0.85 a share. What was the percent decrease? Individual Practice 1.25 – 0.85 = 0.40 First find the amount of change. amount of decrease original amount Set up the ratio. Find the decimal form. Write as a percent. = 0.32 = 32% The value of the stock decreased by 32%.

Discount is the difference between the regular price and the sale price of an item. You can use percent of decrease to find discounts. Markup is the difference between the wholesale cost and the retail price of an item. You can use percent of increase to find markups.

Sarah bought a DVD player originally priced at $450 that was on sale for 20% off. What was the discounted price? Practice (450)(0.20) = 90Find 20% of $450. This is the amount of discount. 450 – 90 = 360Subtract $90 from $450. Method 2: Subtract, then multiply. 100% – 20% = 80%Find the percent Sarah pays. Method 1: Multiply, then subtract. (450)(0.80) = 360Find 80% of 450. The discounted price was $360.