Factoring
25: 1, 5, 25
List the first 10 multiples of 2.
2, 4, 6, 8, 10, 12, 14, 16, 18, 20
4: 1, 2, 4
What is a prime number?
A number with exactly two factors, 1 and itself.
List the factors of 30.
30: 1, 2, 3, 5, 6, 10, 15, 30
list the first 10 multiples of 10.
10, 20, 30, 40, 50, 60, 70, 80, 90, 100
is the number 3 a prime number or composite number?
Prime, it's factors are only 1 and 3.
What is a composite number?
A number with more than 2 factors.
List the factors of 24.
24: 1, 2, 3, 4, 6, 8, 12, 24
list the first 10 multiples of 5.
5, 10, 15, 20, 25, 30, 35, 40, 45, 50
Is the number 20 a prime number or composite?
Composite, it has more than 2 factors.
20: 1, 2, 4, 5, 10, 20
How much money will you send Mme. when you become a millionaire ?
$1,000
List the factors of 2.
2: 1, 2
List the first 10 multiples of 11.
11, 22, 33, 44, 55, 66, 77, 88, 99, 110
List the first 10 multiples of 100.
100, 200, 300, 400, 500, 600, 700, 800, 900, 1000
We learned about two types of numbers this week. One of them is a prime number. What is the other kind?
Composite
20: 1, 2, 4, 5, 10, 20
List the first 10 multiples of 25.
25, 50, 75, 100, 125, 150, 175, 200, 225, 250
is the number 37 a prime or composite number?
prime, it's only factors are 1, 37.
What is a factor?
A whole number that you multiply with another number to find a product.