Factors
What are the factors of 12?
1, 2, 3, 4, 6, 12
Take any acceptable answer (ex. 5, 10, 15, or 20)
a number greater than 1 that has exactly two factors.
What is a composite number?
Any number with more than 2 factors.
How many factors does 18 have?
6 factors
(1, 2, 3, 6, 9, 18)
3, 6, 9
Is 7 a prime number? Why or why not?
yes it is prime. 1x7 is the only way you get 7.
Is 9 a composite number? Why or why not?
yes 3x3=9
Name all the factors of 36
1, 2, 3, 4, 6, 9, 12, 18, 36
What is the 5th multiple of 4?
20
Is 15 a prime number? Explain.
No it is composite. You can use 3x5=15.
Name a composite number greater than 10.
Take any acceptable answer. 12, 14, 15, 16, 18, 20, etc.
What is the greastest factor of 30
If you count by tens, what are the first four multiples?
10, 20, 30, 40
List three prime numbers less than 10.
2, 3, 5, 7 are all acceptable
List all the composite numbers between 1 and 10
4, 6, 8, 9
If a number is 24, what are its two smallest factors?
1 and 2
What is the least common multiple of 2 and 5?
10
Name a prime number between 50 and 60.
53 or 59
Tell me a composite number between 80 and 90.
Take any acceptable answer (81, 82, 84, 85, 86, 87, 88)