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GCF
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Prime Numbers
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100
What is the greatest common factor of 12 and 36
12
100
What is the least common multiple of 8 and 12
24
100
Name a prime number between 7 and 12
11
100
15 + x = 36 x = ?
21
100
4 squared =
16
200
What is the greatest common factor of 75 and 35
5
200
What is the least common multiple of 36 and 21
252
200
How many factors do prime numbers have?
2
200
x + 28 = 101 x = ?
73
200
5 cubed =
125
300
A choir director at your school wants to divide the choir into smaller groups. There are 24 sopranos, 60 altos, and 36 tenors. Each group will have the same number of each type of voice. What is the greatest number of groups that can be formed
12
300
What is the least common multiple of 45 and 180
180
300
The fundamental Theorem of Arithmetic states that all integers greater than 1 are either prime or _____ numbers.
composite
300
48 /x = 3 x = ?
16
300
342 is divisible by 2,3,4,5,6,9,and/or 10
2,3,6,9
400
The GCF is 2. The LCM of two numbers is 24. The numbers differ by 2. What are the numbers?
6 & 8
400
Three clocks ring once at the same time. After that, the first clock rings after every 90 minutes, the second after every 30 minutes, and third after every 60 minutes. After how many minutes will they again ring together?
180 minutes
400
Garret's favorite number is very special. The prime factors of this number do not repeat and are all the odd prime numbers less than 15. What is Garret's number?
15015
400
10.2 times x =24.48 x = ?
2.4
400
Use the distributive property: (36 + 24)
12(3 + 2) 6(6 + 4) 4(9 + 6) 3(12 + 8) 2(18 + 12)
500
Ming has 15 quarters, 30 dimes and 48 nickels. He wants to group his money so that each group has the same number of each coin. If he makes the greatest number of groups that he can, how many of each coin will be in each group?
3 groups, each with 5 Quarters 10 Dimes 16 Nickels
500
Mary wears a jacket every four days and her hat every five days. If she wears her jackets and hats on March 8th, what is the next day she will wear both her jacket and her hat?
March 28th
500
Is 139 a prime number?
YES!
500
83.4 + 2.8 - x = 37.3 x = ?
48.9
500
Sara has a bag of 132 Skittles. She offers to give me 1/3 of them. Write an equation that shows how I calculate the number of Skittles she'll give me.
132/3 = 44 or 132 x 1/3 = 44