A
Rewrite the following factor string using exponents
2x2x2x2x3x3x4x4x4
24x32x43
Find all of the common factors of 10 and 100
1, 2, 5, 10
What is a prime number? Give two examples.
A whole number greater than 1 that can only be divided evenly by 1 and itself.
Possible examples:
2, 3, 5, 7, 11, 13, 17, 23,
What is the prime factorization of 214?
2 x 107
What is the prime factorization of 640? Write your answer in expanded form and exponential form.
Expanded:
2x2x2x2x2x2x2x5
Exponential:
27x5
List the multiples of 12 and 20 to 100. Circle the common ones.
12, 24, 36, 38, 60, 72, 84, 96
20, 40, 60, 80, 100
Sally says the prime factorization of 18 is 2x3x3.
Billy says its 2x32
Who is correct?
Trick question!
They are BOTH correct!
What is the LCM of 10 and 15?
30
What is the GCF of 24 and 60?
12
What is the least common multiple (L.C.M) of 90 and 60 by using the prime factorization method? Show your work.
180
What is the greatest common factor(GCF) of 36 and 120 by using the prime factorization method? Show your work.
12
What is the greatest common factor(GCF) of 20 and 75 by using the prime factorization method?
5
The class is having a party. If the teacher brings 20 cookies and 40 carrot sticks and each student eats the same number of cookies and carrots, what is the greatest number of students in the class?
20
The manager turns on the restaurant’s two neon signs. Both signs blink as they are turned on. One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again?
45 seconds
Luca and Dean each have a band. Luca's band plays songs in sets of 9 and Dean's band plays songs in sets of 3. After performing together, both bands realize that they have played the same number of songs. What is the smallest number of songs each band could have performed?
9 songs