Factors
What are factors?
Factors are the numbers being multiplied in a multiplication problem.
What can the number 7 be classified as? (Select all that apply)
A, B, C, D, F
What is the definition of a composite number?
A composite number is a whole number greater than 1 that has MORE than two different factors.
Prime factorize 48 and 64, then find the LCM.
192 (Prime factors: 48 = 2⁴ × 3, 64 = 2⁶)
Is the number 1 a prime or composite number?
The number 1 is NEITHER a prime or composite.
What are the factors of 21?
The factors of 21 are...
1 x 21
3 x 7
What can the number -5 be classified as? (Select all that apply)
C, D,F
Which of the following numbers is COMPOSITE?
What are its factors?
23 or 25
The number 25 is composite. It has the factors, 1,5, and 25.
Prime factorize 72 and 120, then find the LCM.
360 (Prime factors: 72 = 2³ × 3², 120 = 2³ × 3 × 5)
True or False.
All odd numbers have ONLY odd factors.
True. Odd numbers do not have even factors.
What are the factors of 24?
The factors of 24 are...
1 x 24
2 x 12
3 x 8
4 x 6
What can the number 1/3 be classified as? (Select all that apply)
D and F
True or False.
Composite numbers can be odd or even.
True - Both odd and even numbers can be composite if they have more than 2 factors.
Prime factorize 90 and 150, then find the LCM.
450 (Prime factors: 90 = 2 × 3² × 5, 150 = 2 × 3 × 5²)
Is the number 262 prime or composite?
The number 262 is composite. All even numbers, other than 2, are composite.
Frank lists the factors of 18 as 1,3,6,18.
What factor pair did Frank miss?
Frank missed the factor pair 2 x 9
What can the number √2 be classified as? (Select all that apply)
E and F
Which set of numbers contains only composite numbers?
A - 4 , 8 , 9 , 51
B - 6 , 10 , 29 , 45
Set A contains only composite numbers. The number 29 is prime in set B.
Prime factorize 84 and 140, then find the LCM.
420 (Prime factors: 84 = 2² × 3 × 7, 140 = 2² × 5 × 7)
True or False.
Multiples are never ending.
True. Multiples can go on forever.
Liliana lists the factors of 51 as 3,17,51.
Is Liliana correct? Explain why or why not.
Liliana is incorrect.
ALL products have a factor of 1.
What can the number 0 be classified as? (Select all that apply)
B, C, D, F
Name the composite numbers between 50 and 55.
The composite numbers between 50 and 55 are 50,51,52,54, and 55.
Prime factorize 126 and 210, then find the LCM.
630 (Prime factors: 126 = 2 × 3² × 7, 210 = 2 × 3 × 5 × 7)
What are the first 5 multiples of 17.
The first 5 multiples of 17 are 17 , 34, 51, 68, and 85.