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Answers Prime & Composite Etc… Factors and Multiples LCM & GCF

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Presentation on theme: "Answers Prime & Composite Etc… Factors and Multiples LCM & GCF"— Presentation transcript:

1 Answers Prime & Composite Etc… Factors and Multiples LCM & GCF Prime Factorization Word Problems 10 29 49 1, 2, 3, 4, 6, 8, 12, 16, 24, 48 450 2x2x2x2 LCM=6 20 Prime 21(6) + 21(3) 17,. 34, 51, 68, 85 48 2x2x41 GCF=37 30 Its factors are multiplied by itself 46 19, 38, 57, 76, 95 Possible Answers: (2,45) (5,18) (9,10) (18,45) 2x2x2x2x5x5x5 Or 24x53 LCM=18 40 2,3,5,7,11,13,17,19,23,29 Many possibilities- ex. 90,000 18,000 etc… 2 x 42, 6 x 14, 2 x 6 x 7 … (18,27) (45,54) (18,45) GCF=2 16 50 Whole numbers greater than one have one unique prime factorization False. The multiplication and addition signs must be switched for it to be true. Remove any of the prime numbers and you will have a factor. 22 x 3 x 7 GCF= 26 LCM= 312 384 70

2 Instructions for using this template.
Remember this is Jeopardy, so where I have written “Answer” this is the prompt the students will see, and where I have “Question” should be the student’s response. To enter your questions and answers, click once on the text on the slide, then highlight and just type over what’s there to replace it. If you hit Delete or Backspace, it sometimes makes the text box disappear. When clicking on the slide to move to the next appropriate slide, be sure you see the hand, not the arrow. (If you put your cursor over a text box, it will be an arrow and WILL NOT take you to the right location.)

3 A Hanson and Rohlfing Production
Welcome to Reverse Jeopardy A Hanson and Rohlfing Production

4 You will be given the question. You must give the correct answer.
Reverse Jeopardy Choose a category. You will be given the question. You must give the correct answer. Click to begin.

5 Click here for Final Jeopardy
Choose a point value. Choose a point value. Click here for Final Jeopardy

6 Etc… 10 Point 10 Point 10 Point 10 Point 10 Point 10 Point 20 Points
Prime/ Composite Etc… Factors/ Multiples LCM/GCF Prime Factorization & Trees Word Problems 10 Point 10 Point 10 Point 10 Point 10 Point 10 Point 20 Points 20 Points 20 Points 20 Points 20 Points 20 Points 30 Points 30 Points 30 Points 30 Points 30 Points 30 Points 40 Points 40 Points 40 Points 40 Points 40 Points 40 Points 50 Points 50 Points 50 Points 50 Points 50 Points 50 Points

7 What is the best first move on a 30 game board for the Factor Game?

8 What do we call a number with exactly 2 factors?
Give an example.

9 How do you know if a number is square?
Give an example.

10 Name all the primes between 1 and 30.

11 What does the Fundamental Theorem of Arithmetic state?

12 What is the value of 4 + (3)7?

13 Use the Distributive Property to write an expression equivalent to 21(6 + 3)

14 What is the value of 52 + 3(5 + 2)?

15 Name a five digit number divisible by 2 and 9.

16 True or false? 50 + (400 x 32) = ( ) x ( )

17 48 is a multiple of these numbers.

18 Find the first five multiples of 17.

19 Find the multiples of 19 that are less than 100.

20 Write two different factorizations for 84.

21 Write the prime factorization of a factor of
24 x 32 x 7.

22 Find the LCM of 18 and 25.

23 Find the GCF of 96 and 48.

24 Find a pair of numbers that has 90 as the LCM. (You may not use 90)

25 Find a pair of numbers that have 9 as their GCF.
(You may not use 9)

26 Find the LCM and GCF of 78 and 104.

27 Find the prime factorization of 16.

28 Find the prime factorization of 164.

29 Find the prime factorization of 2000.

30 Use Prime Factorization to find the GCF of 68 and 82.

31 Use Prime Factorization to find the LCM of 96 and 128.

32 If the bakery serves bagels every third day and donuts every other day, on which day will bagels and donuts be served on the same day?

33 A band of pirates divide 185 pieces of silver and 148 gold coins
A band of pirates divide 185 pieces of silver and 148 gold coins. They were absolutely fair about sharing equally. How many pirates were there?

34 The scout leader has a certain number of cookies
The scout leader has a certain number of cookies. They can be divided equally amongst 9 scouts. They can also be divided evenly among 6 scouts. What is the least amount of cookies he might have?

35 Clue 1: My number is a perfect square.
Clue 2: The only prime in its prime factorization is 2. Clue 3: My number is a factor of 32 Clue 4: The sum of its digits is odd.

36 Clue 1: My number is a multiple of 2 and 7.
Clue 2: My number is less than 100, and more than 50. Clue 3: My number is a product of 3 different primes.

37 Final Jeopardy Make your wager

38 Suppose 10 and 6 are common factors for two numbers
Suppose 10 and 6 are common factors for two numbers. What other factors must the numbers have in common.


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