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Prime Factorization.

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Presentation on theme: "Prime Factorization."— Presentation transcript:

1 Prime Factorization

2 Find the prime Factorization of the following: 21
130 84 3 x 7 2 x 5 x 13 2 x 2 x 3 x 7

3 The Combination for the lock on Jacoby’s suitcase is based on the prime factorization of What is the combination? 5 x 7 x 9 3 x 7 x 15 3 x 3 x 5 x 7 2 x 3 x 3 x 5 x 7 c. 3 x 3 x 5 x 7

4 What is the missing prime factor? 2 3 5 7
Chris left out one prime factor when he wrote this prime factorization for 168. 2 x 2 x 2 x 3 x What is the missing prime factor? 2 3 5 7 7

5 What is the missing prime factor? 2 3 7 13
Logan left out one prime factor when she wrote this prime factorization for 1092. 2 x 2 x x 7 x 13 What is the missing prime factor? 2 3 7 13 3

6 The combination lock is a 3-digit number
The combination lock is a 3-digit number. The digits are the prime factors of 42 listed from greatest to least. What is the combination for the lock?

7 What are the first 10 multiples for 4?
4,8,12,16,20,24,28,32,36,40 What are the first 10 multiples for 10? 10,20,30,40,50,60,70,80,90,100 What numbers appear in both lists? 20 and 40 What is the Least Common Mutliple? 20

8 Find the Least Common Multiple for each set of numbers:
5 and 20 6 and 15 12 and 30 20 30 60

9 Mark purchases materials to make watches for a jewelry show
Mark purchases materials to make watches for a jewelry show. There were 6 watch faces in a pack and 9 watch bands in a pack. What is the least number of watches Mark can make without having any supplies left over?

10 Kaley purchases materials to make dog collars for a pet show
Kaley purchases materials to make dog collars for a pet show. There are 6 buckles in a pack and 8 straps in a pack. What is the least number of dog collars Kaley can make without having any supplies left over?

11 Penc ils are sold in packages of 10, and erasers are sold in packages of 6. What is the least number of pencils and erasers you can buy so that there is one pencil for each eraser with none left over?

12 Greatest Common Factor

13 Find the Greatest Common Factor for each pair of numbers: 18 and 45
9 33 24

14 Distributive Property
Use the GCF and Distributive property to express the sum as a product. 18 +24 15 +75 6(3 + 4) 15 x (1 + 5) 18 x (2 +3)

15 Trystan has 56 roses and 42 daises to use in floral centerpieces for a party. Each centerpiece will have the same number of flowers and will contain only roses or only daisies. What is the greatest number of flowers that Trystan can use in each centerpiece?

16 There are 24 sixth graders and 40 seventh graders. Mr
There are 24 sixth graders and 40 seventh graders. Mr. Evans wants to divide both grades into groups of equal size, with the greatest possible number of students in each group. How many students should be in each group?

17 Jacob is putting 18 nonfiction and 30 fiction books on the bookshelves
Jacob is putting 18 nonfiction and 30 fiction books on the bookshelves. Each shelf will have only fiction or only nonfiction, and every shelf will have the same number of books. What is the greatest number of books for each shelf, and how many shelves will be there for each type of book.

18 Decimals

19 Find the sum or the difference.
– 9.41 – 19.39 – ( ) –

20 Find the product 1) 8.6 x 4.1 2) 12.8 x 2.21 3) $8.65 x 9.2
4) Maria works 24.5 hours each week at a bookstore. She earns $8.76 per hour. How much does Maria earn each week? 5) A camera costs 115 Canadian dollars. If the Canadian dollar is worth U.S. dollars, how much will the camera cost in U.S. dollars?

21 Find the quotient. 3.78 ÷ 6 = 92.8 ÷ 16 = 1.725 ÷ 5 = 135.3 ÷ 11= O’Darion’s kitchen sink has leaked liters of water during the past 6 months. What is the average amount of water leaked each month?

22 Find the quotient. 1) ÷ 0.62= 21.05 ÷ 0.2 = 145.7 ÷ 2.71 = 18.62 ÷ 0.02 = 5) Adrian wants to buy a new MP3 player that cost $ If he saves $8.50 each week, how many weeks will it take Adrian to save enough money to buy the MP3 player?

23 Ratios

24 Write the ratio of triangles to squares.

25 Make a model of the ratio 5:1.

26 Complete the table. 1 table for every 5 students Students 5 15 Tables 1 2 4

27 There are four quarts in 1 gallon. How many quarts are in 3 gallons?
12

28 At Fabric World, ribbon is sold at a rate of $2 for 1 Yard
At Fabric World, ribbon is sold at a rate of $2 for 1 Yard. What would 8 yards of fabric cost? $16

29 𝑎. $0.25 6 𝑞𝑢𝑎𝑟𝑡𝑠 𝑏. $1.50 1 𝑞𝑢𝑎𝑟𝑡 𝑐. $7.50 1 𝑞𝑢𝑎𝑟𝑡 𝑑. $9.00 6 𝑞𝑢𝑎𝑟𝑡𝑠
Andre purchased 1 quart of lemonade from a concession stand for $ Which shows the rate for 6 quarts of lemonade? 𝑎. $ 𝑞𝑢𝑎𝑟𝑡𝑠 𝑏. $ 𝑞𝑢𝑎𝑟𝑡 𝑐. $ 𝑞𝑢𝑎𝑟𝑡 𝑑. $ 𝑞𝑢𝑎𝑟𝑡𝑠

30 Cameron can buy 20 pens for $1. 60 or 25 pens for $2. 25
Cameron can buy 20 pens for $1.60 or 25 pens for $ Find the unit rate for each and decide which is the better buy.

31 David used the grocery store ads to list apple prices at 4 stores.
Gordon’s 4 pounds for $3.32 Greenwise: 2 pounds for $1.62 PJ’s: 3 pounds for $2.37 Tosko: 5 pounds for$4.50 Which stores charges the least amount per pound?

32 Write 2 ratios equivalent to 5 9 .

33 Sharon takes a 6-minute break after every 24 minutes of study
Sharon takes a 6-minute break after every 24 minutes of study. Ben takes an 8 minute break after every 32 minutes of study. Are their ratios of study time to break time equivalent?

34 Find the unknown value. 4 5 = ? 20 24 27 = ? 9
Sophie can make 3 loaves of bread with 7 cups of flour. How many loaves of bread can be she make with 21 cups of flour? Honeybees produce 7 pounds of honey for every 1 pound of beeswax they produce. Use equivalent ratios to find how many pounds of honey are produced when 25 pounds of beeswax are produced.

35 Joseph takes a trip on a train that travels at a rate of 95 miles per hour. Which set of ordered pairs represents the trains distance over time? (1,95); (2,96); (3,97); (4,98) (1,95); (1,190); (1, 285); (1,380) (1,95); (2,95); (3,95); (4,95) (1,95); (2,190); (3,285); (4,380)

36 To stay properly hydrated a person should drink 32 fluid ounces of water for every 60 minutes of exercise. How much water should Damon drink if he rides his bike for 135 minutes ?

37 Percents

38 How can you model 19%?

39 What ratio represents the shaded part?

40 What decimal represents the shaded part?

41 Write each percent as a decimal and as a fraction in simplest terms.
75% 38% 0.9% 234%

42 Write the decimal or fraction as a percent.
.45 0.6 7 8 0.03 51 10

43 Find the percent of the quantity. Find 8% of 90. Find 0.25% of 120.
In a crate of 1,500 light bulbs, it is estimated that 4% are defective. How many of the 1,500 light bulbs in the crate are likely defective? The recommended daily amount of vitamin C for children 9 to 13 years old is 45 mg. A serving of juice contains 60 % of the recommended amount. How much vitamin C does the juice drink have?

44 At a deli, 56 sandwiches were sold during lunchtime
At a deli, 56 sandwiches were sold during lunchtime. 25% of the sandwiches sold were tuna salad sandwiches. How many of the sandwiches sold were not tuna salad?

45 Jaqueline has 80 books in her collection
Jaqueline has 80 books in her collection. If 60% of the books are fiction, how many of the books are non fiction?

46 Find the unknown value. 12 is 40% of __________. 36 is 90% of __________. Michaela is hiking on a weekend camping trip. She has walked 6 miles so far. This is 30 % of the total distance. What is the total number of miles she will walk?

47 Conversions

48 Convert 4.5 miles to yards. Convert 48 inches to feet. 0.8 hectometers = _________millimeters 45 centimeters = ______________ dekameters

49 Convert 0.72 kiloliters to deciliters.
52 liters = _____________ hectoliters 78 quarts= ____________ gal =___________ qt 5 pints = ____________ cups =_____________ oz

50 43.2 dg = _______________ hg
3.5 grams = _____________ milligrams 4,500 pounds = _____________ Tons 3 pounds = _____________ ounces Maggie bought 52 ounces of swordfish selling for $6.92 per pound. What was the total cost?

51 Green grapes are on sale for $2. 50 a pound
Green grapes are on sale for $2.50 a pound. How much will 9 pounds cost? A car travels 32 miles for each gallon of gas. How many gallons of gas does it need to travel 192 miles? Sammy is riding a raft down a stream that is moving at a rate of 75 feet per minute. How far down stream does she travel in 5 minutes? Anaelle drove miles at a rate of 57 miles per hour. For how long was Anaelle driving?

52 Draw the model to find the quotient: 1 4 ÷2.
Take the shaded part and split it into 2 equal parts. Each part is now

53 Draw the model to find the quotient: 2 3 ÷4.
Take the shaded part and split it into 4 equal parts. Each part is now

54 Draw the model to find the quotient: 3 1 2 ÷ 1 6 .
Start with We need 𝑤ℎ𝑒𝑟𝑒 6 𝑡𝑟𝑖𝑎𝑛𝑔𝑙𝑒𝑠 𝑒𝑞𝑢𝑎𝑙 1 ℎ𝑒𝑥𝑎𝑔𝑜𝑛. Now count the number of triangles you have. 21

55 Find the quotient. 3 4 ÷1 1 2 4 1 2 ÷1 3 4 24÷2 2 3 3 7 8 ÷4

56 A branch measuring 8 7 8 𝑓𝑒𝑒𝑡 𝑤𝑎𝑠 𝑐𝑢𝑡 𝑓𝑟𝑜𝑚 𝑎 𝑡𝑟𝑒𝑒. 𝐴𝑛𝑛𝑖𝑒 𝑚𝑎𝑑𝑒
𝑤𝑎𝑙𝑘𝑖𝑛𝑔 𝑠𝑡𝑖𝑐𝑘𝑠 𝑓𝑟𝑜𝑚 𝑡ℎ𝑒 𝑏𝑟𝑎𝑛𝑐ℎ. 𝑆ℎ𝑒 𝑑𝑖𝑠𝑐𝑎𝑟𝑑𝑒𝑑 𝑓𝑜𝑜𝑡 𝑜𝑓 𝑡ℎ𝑒 𝑏𝑟𝑎𝑛𝑐ℎ. 𝐻𝑜𝑤 𝑚𝑎𝑛𝑦 𝑤𝑎𝑙𝑘𝑖𝑛𝑔 𝑠𝑡𝑖𝑐𝑘𝑠 𝑑𝑖𝑑 𝑠ℎ𝑒 𝑚𝑎𝑘𝑒 𝑓𝑟𝑜𝑚 𝑡ℎ𝑒 𝑏𝑟𝑎𝑛𝑐ℎ?

57 Multiplying Fractions

58 Find the Product. 3 4 𝑥 1 5 = 𝑥 5 9 = Mr. Carly had a gas can with gallons of gasoline in it. He used of the amount in the can to mow his lawn. How many gallons did Mr. Carly use to mow his lawn? 𝑥 =

59 Exponents

60 Write as an expression using equal factors. Then find the value.
3 4 5 3 8 5 10 7 John is making a patio in his yard. He needs a total of 15 squared concrete blocks to cover the area. How many blocks does John need?

61 Order of Operations

62 Evaluate each expression.
1) 8 2 − 5− ÷4 (80-15÷3)÷ 5 2 8 x ( )

63 Algebraic Expressions

64 Write an algebraic expression for the word expression.
b divided by 9 d decreased by 29 8 times g 2 less than the quotient of d and 16 Let h represent Jake’s height in inches. Heather is 7 inches shorter than Jake. Write an algebraic expression that represents Heather’s height.

65 Evaluate the expression for x =3,2,1, and 0

66 Evaluate the expression for the given value of the variables.
7x + y + 16 for x=2, y=3 12b – 2c + 3 for b=5, c=10 The formula P= 2l + 2w gives the perimeter(p) of a rectangular room with length (l) and width (w). A rectangular living room is 26 feet long and 21 feet wide. What is the perimeter of the room?

67 Combining like Terms

68 Tereza sells produce in boxes at a Farmer’s market
Tereza sells produce in boxes at a Farmer’s market. She put 6 ears of corn and 9 tomatoes in each box. The expression 6b +9b represents the total pieces of produce in b boxes. Simplify this expression by combining the like terms. Jackets cost $15 and a set of decorative buttons cost $5. The delivery fee is $5 per order. The expression 15n +5n + 5 gives the cost in dollars, of buying jackets with buttons for n people. Which is another way to write this expression?

69 Simplify: 7x + 2x + 5x 9c – 6 + c 3(m + 7) 8(4n -2n) Are the two expressions equivalent: 6(p + q) and 6p + q 7y – y and 9y - 15

70 Determine if the statement is true. m ≥ 4 if m = 2 Y ≤ 3 if y = 6
Give two solutions for this inequality: v ≥ 9. In the town of Big Hill, there is an average of 16 sunny days each month. Write an expression to represent the number of sunny days for any number of months. Then identify what the variable represents. False false 16s where “s” equals the number of months

71 Write the equation for each word sentence.
18 more than a number is 29 The product of a number and 6 is 138. Four fifths of a number is 11 An ostrich egg weighs 2.9 pounds. The difference between the weight of this egg and the weight of an emu egg is 1.6 pounds. Write an equation that could be used to find the weight w, in pounds, of an emu egg.

72 Solve and check. X + 13 = 27 38 = d – 22 w =4 2 5 4x = 12 𝑑 4 =5

73 Solve and check. 4 5 𝑘=12 1.5w = 12 Haley runs 6 laps on a track. She runs a total of 1 mile or 5,280 feet. Write and solve an equation to find the distance, in feet, she runs each lap.

74 Solve and check. Alyssa’s cat weighs 12 pounds, which is of the weight of her dog. Use the equation 3 8 𝑑=12 to find the weight of Alyssa’s dog. Jana paid $12 for a shirt that was on sale. The sale price of the shirt was of the original price p. The equation 1 3 𝑝=12 can be used to find the original price of the shirt. What is the original price of the shirt?

75 An IPOD can store less than 240 songs
An IPOD can store less than 240 songs. Which inequality represents the possible number of songs s the IPOD can store? a. S ≥ 240 b. S ≤ 240 c. S > 240 d. S < 240 A ship can carry no more than 6 tons of cargo. Which inequality represents the number of tons t that the ship can carry? a. t< 6 b. t> 6 c. t ≤ 6 d. t ≥ 6

76 Graph the inequality. k< 8 r ≥ 6

77 Write the inequality shown by each graph.
-3 -2 -1 1 2 3 4 5 6 8 -4 7 -5 9 -4 -3 -3 -2 -1 1 23


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