Prime/Composite Numbers Prime numbers Only divisible by 1 & itself Composite numbers Divisible by more than 1 & itself Prime/Composite Numbers Is 17 a.

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Transcript Prime/Composite Numbers Prime numbers Only divisible by 1 & itself Composite numbers Divisible by more than 1 & itself Prime/Composite Numbers Is 17 a.

Prime/Composite Numbers
Prime numbers Only divisible by 1 & itself
Composite numbers Divisible by more than 1 & itself
Prime/Composite Numbers
Is 17 a prime or composite number?
Prime/Composite Numbers
Try to find factors of 17
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3 a No!
factor?
3
3
3
3
3
2
Prime/Composite Numbers
Is 4 a factor?
Prime/Composite Numbers
Is 4 a factor?
Prime/Composite Numbers
Is 4 a factor?
Prime/Composite Numbers
Is 4 a No!
factor?
4
4
4
4
1
Prime/Composite Numbers
Is 5 a factor?
Prime/Composite Numbers
Is 5 a factor?
Prime/Composite Numbers
Is 5 aNo!
factor?
5
5
5
2
Prime/Composite Numbers
Through trial and error
students determine prime/composite.
Prime/Composite Numbers
MathLine illustrates “WHY?”
Prime/Composite Numbers
Is 24 a prime or composite number?
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3 a factor?
Prime/Composite Numbers
Is 3
Yes!
a factor?
3
3
3
3
3
3
3
3
Prime/Composite Numbers
Is 4 a factor?
Prime/Composite Numbers
Is 4 a factor?
Prime/Composite Numbers
Is 4 a factor?
Prime/Composite Numbers
Is 4 a factor?
Prime/Composite Numbers
Is 4 a factor?
Prime/Composite Numbers
Is 4 aYes!
factor?
4
4
4
4
4
4
Prime/Composite Numbers
Is 5 a factor?
Prime/Composite Numbers
Is 5 a factor?
Prime/Composite Numbers
Is
No!
5 a factor?
5
5
5
5
4
Prime/Composite Numbers
Is 6 a factor?
Prime/Composite Numbers
Is 6 a factor?
Prime/Composite Numbers
Is 6 aYes!
factor?
6
6
6
6
Prime/Composite Numbers
Is 7 a factor?
Prime/Composite Numbers
Is 7 a factor?
Prime/Composite Numbers
Is 7 a No!
factor?
7
7
7
3
Prime/Composite Numbers
Is 8 a factor?
Prime/Composite Numbers
Is 8 a factor?
Prime/Composite Numbers
Is 8 aYes!
factor?
8
8
8
Prime/Composite Numbers
Is 9 a factor?
Prime/Composite Numbers
Is 9 a No!
factor?
9
9
6
Prime/Composite Numbers
Is 10 a factor?
Prime/Composite Numbers
Is 10 aNo!
factor?
10
10
4
Prime/Composite Numbers
Is 11 a factor?
Prime/Composite Numbers
Is 11 aNo!
factor?
11
11
2
Prime/Composite Numbers
Is 12 Yes!
a factor?
12
12
Prime/Composite Numbers
Students can determine
factors of 24
2, 3, 4, 6, 8 and 12