Factors
The factors for 20 are?
What are:
1, 20, 4, 5, 2, 10
The first 3 multiples of 7 are?
7, 14, 21
Is 5 a prime number? How do you know?
Yes because the only factors for 5 are 1 and 5
Yes because it has more then 2 factors
Karmyn and Ava are playing games at the local arcade. Karmyn wins 5 tickets from every game played and Ava wins 11 tickets from every game played. When they stopped playing games they ended with the same amount of tickets. What is the MINIMUM number of games that AVA could have played?
5 games
The factors for 36 are?
1, 36, 2, 18, 6
The first 6 multiples of 4 are
4, 8, 12, 16, 20, 24
True or false 7 is a prime number.
True
True or false: 15 is a composite number?
True
Charlie is told to find the least common multiples of the numbers 6 and 9. They believe that the lowest multiple these two numbers have in common is 54. Is Charlie correct? Why or why not?
Yes
What are the common factors for:
18 and 32
18= 1, 18, 2, 9, 3, 6
32= 1, 32, 2, 16, 4, 8
1 and 2 are the two common factors
What is the Least Common Multiple between these two numbers?
3 and 5
3= 3, 6, 9, 12, 15, 18, 21
5= 5, 10, 15, 20, 25, 30, 35
LCM= 15
True of false? 1 is a prime number
False it is neither
True or false 11 is composite number?
False it is prime
Trinity dances every 4 days. Cedric does weight lifting every 3 days, and Alissa sings every 6 days. Suppose they all have their activity starting on November 1st. What are the next 3 days that they will work out together?
4= 4, 8, 12, 16, 20, 24, 28, 32, 36, 40
3= 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36
6= 6, 12, 18, 24, 30, 36, 42, 48
12, 24, 36
What is the greatest common factor between these 3 numbers?
20, 35, 40
20= 1, 20, 2, 10, 4, 5
35= 1, 35, 5, 7,
40= 1, 40, 2, 20, 4, 10, 5, 8
GCF= 5
What is the Least Common Multiple between these 3 numbers?
6, 9, 2
6= 6, 12, 18, 24, 30, 36
9= 9, 18, 27, 36, 45, 54
2= 2, 4, 6, 8, 10, 12, 14, 16, 18
LCM= 18
List all the factors for 25. Which factors are prime?
5
List all the factors for 24. Which ones are composite?
4, 6, 12
Melanie and Luke brought in packages of granola bars. Melanie had 15 bars in total and Luke had 12 bars in total. How many bars could their be in one package?
3
What is the greatest common factor between these 3 numbers?
54, 63, 80
54=
63=
80=
Andrew jogs every 2 days. Henry does Pilates every 3 days. Suppose they both work out together on October 1st. What are the next 3 days that they will work out together?
2=2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30
3= 3, 6, 9, 12, 15, 18, 21, 24, 27, 30
Days: 6, 12, 18
List all the factors for 12, 30, and 28. Which factors are prime?
12= 1, 12, 2, 6, 3, 4
30 = 1, 30, 2, 15, 5, 6
28= 1, 28, 2, 14, 4, 7
Prime: 2, 3, 5, 7
List all the factors for 12, 30, and 28. Which factors are composite?
12= 1, 12, 2, 6, 3, 4
30 = 1, 30, 2, 15, 5, 6
28= 1, 28, 2, 14, 4, 7
Composite: 12, 6, 4, 15, 14, 28, 30
What is a factor?
What is a prime number?
What is a composite number?
The answer, the question, a number only divisible by 1 and itself, a number with more then 2 factors