Download presentation

Presentation is loading. Please wait.

Published byDaniella Blaise Modified over 2 years ago

1
Write Proportions

2
Sue needs 9 cups of flour to make 16 batches of cookies. How much flour does she need if she only wants to make a fourth of her recipe. Set up proportion. Cross Multiply. Divide = cups Cups 9 16 X X batches 4 9 X 4 = 36 36 ÷ 16 = 4 16 2 1 4 2 = Cups Determine Ratios. EX 5)

3
Ralph has a paper clip with a mass of 9g and a volume of 3cm 3. What is the density? Set up proportion. Cross Multiply. Divide = Mass mass 9 g 3 cm 3 X 1 Volume cm 3 9 X 1 = 9 9 ÷ 3 = Determine Ratios. EX 6) Density – is a comparison of how much mass is in a unit of volume. Written – mass / unit volume 3 Density = 3g/cm 3

4
A 12 oz sport drink cost $1.08 and a 16 oz. sport drink cost $1.28. Which drink is the better buy? Step 2: set up proportion = Step 1: highlight rates oz $ $ 16 1.28 X 1 Step 3: Cross multiply and divide EX. 7) Since you are comparing you will set up two proportions = oz $ 12 1.08 X 1 $ Solve

5
161.28 12 oz drink that cost $1.08 is $0.09 / oz $1.08 X 1 = 1.08÷ 121.0812.00 9 Back 16 oz drink that cost $1.28 is $0.08 / oz $1.28 X 1 = 1.28÷ 16.00 8 The better buy is the cheaper drink The 16 oz is the better buy

6
A car travels 480 miles in 8 hours and uses 16 gallons of gas. What is the average speed? ( miles per hour) What is the average gas mileage? ( miles per gallon) Try this on your own

7
Notes start here

8
Solve Proportions

9
CROSS PRODUCT RULE In the proportion =, the cross products, a · d and b · c are equal. abab cdcd EX 1) = 2424 1212 uses 1. EX 2) = 5757 3535 2. 3. EX 3)

10
You can use the cross product rule to solve proportions with variables. Which help you find missing values. = = 1. 2. 3. = m5m5 9 15 This is called the extreme and means ratio. = EX 4)

11
How many miles traveled per hour? miles Unit rate : a rate whose denominator is 1. It may not always look like a number; watch for words like per or each. EX 5) 200 / 4 hours Step 2: = Step 1: Step 3:

12
gallons miles EX 6) 160 / 5 How many miles per gallon? =

13
Convert 5,000 pounds to tons. 1: Set up = pounds tons = = EX 7) 2: _____ Proportion C D Convert 24 pints to cups. = cups pints = = EX 8)

14
Sue needs 9 cups of flour to make 16 batches of cookies. How much flour does she need if she only wants to make a fourth of her recipe. = EX 9)

15
Ralph has a paper clip with a mass of 9g and a volume of 3cm 3. What is the density? = EX 10) Density – is a comparison of how much mass is in a unit of volume. Written – mass / unit volume

16
A 12 oz sport drink cost $1.08 and a 16 oz. sport drink cost $1.28. Which drink is the better buy? = EX 11) =

17
A car travels 480 miles in 8 hours and uses 16 gallons of gas. What is the average speed? ( miles per hour) What is the average gas mileage? ( miles per gallon) Try this on your own

Similar presentations

OK

4-2 Rates Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes.

4-2 Rates Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes.

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on model view controller jsp Ppt on revolt of 1857 pictures Ppt on tunnel diode symbol Decoding in reading ppt on ipad Ppt on revolt of 1857 in india Ppt on new invention of computer technology Ppt on human induced disasters Ppt on carburetor cleaner Ppt on condition based maintenance pdf Ppt on descriptive vs inferential statistics