Factors
List the factors of 12 from least to greatest.
1, 2, 3, 4, 6, 12
List the first five multiples of 3.
3, 6, 9, 12, 15...
Is 12 PRIME or COMPOSITE?
COMPOSITE
14 seats
Is 5 a factor of 92? Why or why not?
5 is not a factor of 92, because 5 is only a factor of numbers that end in 5 or 0.
TRUE or FALSE: 60 is a multiple of 20.
PROVE IT!
TRUE, because 20 x 3 = 60.
Is 21 a prime number? Explain or show your reasoning.
No, 21 is not prime because its factors are 1, 3, 7, and 21.
Jenny says that 12 is a factor of 54. Is Jenny correct or incorrect? Explain.
Jenny is incorrect. 12 is NOT a factor of 54, because:
12 x 4 = 48
12 x 5 = 60
TRUE or FALSE: 16 is a factor of 8. PROVE IT!
False- 16 is a MULTIPLE of 8.
List the first five multiples of 12.
12, 24, 36, 48, 60...
List all of the prime numbers under 10.
2, 3, 5, 7
If I am having a party with 30 people, should I get tables with 5 chairs at each table, or tables with 8 chairs at each table? Show your work.
You should get tables with 5 chairs at each table, so that each table has an equal amount of people and there are no extra spots. 5 x 6 = 30, so you will have 6 full tables.
8 is not a factor of 30.
List the factors of 49.
1, 7, 49
Is 96 a multiple of 8? (Write Yes or No)
PROVE IT!
96 is a multiple of 8 because 8 x 12 = 96.
Is 2 PRIME or COMPOSITE. Explain or show your reasoning.
2 is PRIME because its only factors are 1 x 2.
If 6 people are making bracelets, how many beads could there be so that each person gets the same number of beads?
6, 12, 18, 24, 30, 36, 42, etc.
Name a number that is a FACTOR of both 9 and 12.
3
Name a number that is a multiple of both 4 and 5.
20, 40, (more possibilities)
Name a prime number that is between 40 and 50.
41, 43, or 47
If 3 people want to split 45 pieces of candy equally, can this be done?
PROVE IT!