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Template by Modified byBill Arcuri, WCSD Chad Vance, CCISD

Click Once to BeginJEOPARDY!

Factors & Multiples Review


JEOPARDY!

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Prime & Composite Factors Multiples GCF LCM Word

Problems


This type of number has ONLY two factors


Prime


This type of number has MORE than two factors


Composite


Give an example of an ODD composite number


9, 15, 21, 25, 27, 33, 35, 39….51……

(answers may vary)


This type of number has an odd number of factors

because two factors are exactly the same.

(number multiplied by itself results in this kind of number)


Square Number


Why is 2 the only even prime number?


All other even numbers have more than two factors.

They are divisible by one and themselves, and then

two and its factor pair.


Find all the factors of 30


30

1 302 153 105 6


641 642 324 168 8


51 1 51 3 17

Go through those

divisibility rules so 3

doesn’t trick you!


72 1 72

2 36 3 24 4 18 6 12

8 9


1201 1202 603 40

4 305 246 208 15

10 12(16 factors)


List the first five multiples of 7


7: 7, 14, 21, 28, 35


List the first five multiples of 15


15: 15, 30, 45, 60, 75


List the first 5 multiples of 80


80: 80, 160, 240, 320, 400


How do you find multiples?


Multiply the given number by any other

whole number(Multiples we multiply- they go

on forever!)


List the first 5 multiples of 14


14: 14, 28, 42, 56, 70


What is the GCF of 30 and 25?


30 251 30 1 252 15 5 53 105 6

GCF=5


36 451 30 1 252 18 3 153 12 5 94 96 6

GCF=9


100 721 100 1 722 50 2 36

4 25 3 24

5 20 4 18 10 10 6 12

8 9GCF=4


63 841 63 1 843 21 2 42

7 9 3 28 4 21

6 14 7 12

GCF= 21


Find the GCF of 18, 24, 54


18: 1, 2, 3, 6, 9, 1824: 1, 2, 3, 4, 6, 8, 12, 2454: 1, 2, 3, 6, 9, 18, 27, 54

GCF= 6


What is the LCM of 4 and 20?


4: 4, 8, 12, 16, 20, 24 20: 20

LCM= 20


7: 7, 14, 21, 28, 35, 42, 56, 63, 70, 77, 84, 91

13: 13, 26, 39, 52, 65, 78, 91

LCM= 91


11: 11, 22, 33, 44, 55, 66, 774: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44

LCM= 44


Find the LCM of 15 and 25


15: 15, 30, 45, 60, 75, 9025: 25, 50, 75

LCM= 75


What is the LCM of 8, 32, and 48?


8: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96 32: 32, 64, 9648: 48, 96

LCM= 96


Photography Club plans to provide food at their first meeting.

They have 20 cookies and 40 slices of pizza to be shared equally. Each student who

attended had the same number of whole cookies and slices of pizza, with nothing left over. What is the greatest number of students who

can attend?


GCF= 20 students


Sam can speed walk a mile in 16 minutes, and Dan can

speed walk a mile in 14 minutes. If they start at the

same time on the track, how long will it take before they meet at the starting point

again?


LCM= 112 minutes


Mrs. Mayer has 27 students in her fifth period class and Miss

Vinborg has 18 in her fifth period class. If they plan to

combine the classes to make the greatest number of groups

by equally dividing up each teacher’s students, how many

groups can they make?


GCF= 9 groups


Lisa is making activity baskets to donate to charity. She has

12 coloring books, 28 markers, and 36 crayons. What is the greatest number of baskets she can make if each type of

toy is equally distributed among the baskets?


GCF= 4 baskets


Bottled water comes in cases of 24. Cups come in packs of 30. If Jim wants to hand out

cups of water during a 5k race, what is the smallest quantity of both water and cups he needs

to buy in order to serve the same amount of each to the

runners?


24: 24, 48, 72, 96, 12030: 30, 60, 90, 120

120 of each item is needed; 5 cases of water4 packs of cups

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