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We will write ratios as fractions in simplest form

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Presentation on theme: "We will write ratios as fractions in simplest form"— Presentation transcript:

1 We will write ratios as fractions in simplest form
Lesson Page Ratios A Ratio i sa comparison of two quantities by division We will write ratios as fractions in simplest form We will simplify ratios involving measurements

2 Copy 2 cups = 1 pint 16 ounces = 1 pound 4 cups = 1 quart
You may use this on test 2 cups = 1 pint 4 cups = 1 quart 2 pints = 1 quart 4 quarts = 1 gallon 16 ounces = 1 pound 12 inches = 1 foot 36 inches = 1 yard 3 feet = 1 yard

3 When converting measurement for a ratio use the following:
pints to cups quarts to pints quarts to cups gallon to quart pound to ounces feet to inches yard to feet yard to inches You may use this on test

4 Many ways to write ratios
Algebra Numbers Always Reduce

5 If playing basketball 12 baskets in 18 attempts 12: to 18 12 18

6 10 of every 30 Americans own a cell phone
15 out of every 100 students like Physical Education

7 90 to 4

8 When writing a ratio involving measurements, both
quantities should have the same unit of measurement

9 convert ounces to pounds Write as fraction Reduce
Example Express 8 ounces to 3 pounds pounds to ounces convert ounces to pounds Write as fraction Reduce Remember Hint ounces = 1 pound

10 convert ounces to pounds Write as fraction Reduce
Example Express 8 ounces to 3 pounds pounds to ounces convert ounces to pounds Write as fraction Reduce Remember Hint ounces = 1 pound

11 (convert pints to quarts)
3 pints to four quarts (convert pints to quarts) convert quarts to pints Remember Hint pints = 1 quart

12 (convert pints to quarts)
3 pints to four quarts (convert pints to quarts) convert quarts to pints Remember Hint pints = 1 quart

13 Page 268 Problems write as fractions and reduce 6 - 9 and are measurements (changes) 22 and 23 are word problems

14 Pages 268 - 269 5. 15 out of 24 Problems 1- 25 10. 9 out of 15
Selected on next 3 slides 1. 12:16 out of 60 3. 36:84 to 25

15 Pages 268 - 269 5. 15 out of 24 Problems 1- 25 10. 9 out of 15
Selected on next 3 slides 1. 12:16 out of 60 3. 36:84 to 25

16 pints to 4 quarts 8. 9 inches to 1 yard 9. 6 gallons to 3 quarts

17 pints to 4 quarts 8. 9 inches to 1 yard 9. 6 gallons to 3 quarts

18 yards to 10 feet ounces to 2 pounds quarts to 4 gallons feet to 14 inches

19 yards to 10 feet ounces to 2 pounds quarts to 4 gallons feet to 14 inches

20 yards to 10 feet ounces to 2 pounds quarts to 4 gallons feet to 14 inches

21 yards to 10 feet ounces to 2 pounds quarts to 4 gallons feet to 14 inches

22

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24 Page 272 Lesson 6.2 Unit Rates $11 for 4 boxes of cereal
400 miles on 14 gallons How much is 1 box ? How many miles does your car (truck) get per gallon of gas?

25 Page 272 Lesson 6.2 Unit Rates $11 for 4 boxes of cereal
400 miles on 14 gallons How much is 1 box ? How many miles does your car (truck) get per gallon of gas?

26 Page 272 Lesson 6.2 Unit Rates $11 for 4 boxes of cereal
400 miles on 14 gallons How much is 1 box ? How many miles does your car (truck) get per gallon of gas?

27 Usually when dealing with money you will put
the amount first

28 Lets do a few 1B. 100 meters in 14 seconds Page 272
1A. $18.50 for 5 pounds

29 Page 273 Online music store sells 15 songs for $12.00. iTunes sells 10 songs for $9.00. What is the best deal?

30 Page 273 Online music store sells 15 songs for $12.00. iTunes sells 10 songs for $9.00. What is the best deal?

31

32 Page 273 Online music store sells 15 songs for $12.00. iTunes sells 10 songs for $9.00. What is the best deal?

33 A store sells two different kinds of head phones.
Package of 8 sets for $ and package of 12 sets for $ What is the cheapest package?

34 A store sells two different kinds of head phones.
Package of 8 sets for $ and package of 12 sets for $ What is the cheapest package?

35 A store sells two different kinds of head phones.
Package of 8 sets for $ and package of 12 sets for $ What is the cheapest package?

36 Assignment Page 274 Problems Bonus #20

37 Page 274 $24 per day miles per gallon points per game 4. $3.25 per pound gallons per minute feet per second

38 Page 274 7. Peanuts Which brand is the best buy? Explain your reasoning Barrel 10 oz. for $3.39 Mr. Nut 14 oz for $4.54 Chip's 18 oz for $6.26

39 Page 274 7. Peanuts Which brand is the best buy? Explain your reasoning Barrel 10 oz. for $3.39 Mr. Nut 14 oz for $4.54 Chip's 18 oz for $6.26 .34 cents per oz .32 cents per oz .35 cents per oz

40 miles Drove 170 in 2.5 hours how many miles in 4 hours?

41 9. 26 12. $7.49 13. $77 15. $6.50

42 20. Recipe calls for 3/4 cup of sugar to make 2 dozens cookies
I need 4 1/2 dozen cookies How much sugar do I need?

43 20. Recipe calls for 3/4 cup of sugar to make 2 dozens cookies
I need 4 1/2 dozen cookies How much sugar do I need? First find amount of sugar for 1 dozen 3/4 divided by 2

44 20. Recipe calls for 3/4 cup of sugar to make 2 dozens cookies
I need 4 1/2 dozen cookies How much sugar do I need? First find amount of sugar for 1 dozen 3/4 divided by 2 = 3/8 3/8 x 9/2 = multiply 3/8 times /2

45 20. Recipe calls for 3/4 cup of sugar to make 2 dozens cookies
I need 4 1/2 dozen cookies How much sugar do I need? First find amount of sugar for 1 dozen 3/4 divided by 2 = 3/8 3/8 x 9/2 = multiply 3/8 times /2 27/16 = 1 11/16

46 Example 3 Page 273 A typical dolphin will take about 34 breaths in 4 hours. How many breaths will a dolphin take in 7 hours?

47 Example 3 Page 273 A typical dolphin will take about 34 breaths in 4 hours. How many breaths will a dolphin take in 7 hours?

48 Example 3 Page 273 A typical dolphin will take about 34 breaths in 4 hours. How many breaths will a dolphin take in 7 hours?

49 Page 273 Guided Practice 3. Classwork
A bakery can make 195 doughnuts in 3 hours. At this rate, how many doughnuts can the bakery make in 8 hours?

50 Questions for Example 3? Assignment Page 274 Problems


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