Factors
What are the factors of 12?
1, 2, 3, 4, 6, 12
1x12, 2x6, 3x4
What are the first eight multiples of 4?
4, 8, 12, 16, 20, 24, 28, 32
GCF (9, 12)
3
9: 1, 3, 9
12, 1, 2, 3, 4, 6, 12
LCM (3, 5)
15
3, 6, 9, 12, 15
5, 10, 15
Is 9 a factor of 27?
True
3 x 9 = 27
What are the factors of 20?
1, 2, 4, 5, 10, 20
1x20, 2x10, 4x5
What are the first eight multiples of 7?
7, 14, 21, 28, 35, 42, 49
GCF (18, 30)
6
18: 1, 2, 3, 6, 9, 18
30: 1, 2, 3, 5, 6, 10, 15, 30
LCM (8, 12)
24
8, 16, 24
12, 24
Is 6 is multiple of 12?
False
It is a factor.
What are the factors of 40?
1, 2, 4, 5, 8, 10, 20, 40
1x40, 2x20, 4x10, 5x8
What are the first eight multiples of 11?
11, 22, 33, 44, 55, 66, 77, 88
GCF (25, 45)
5
25: 1, 5, 25
45: 1, 3, 5, 9, 15, 45
LCM (9, 12)
36
9, 18, 27, 36
12, 24, 36
Is 3 a multiple of 21?
False
It is a factor.
What are the factors of 30?
1, 2, 3, 5, 6, 10, 15, 30
1x30, 2x15, 3x10, 4x9, 5x6
What are the first eight multiples of 9?
What is 9, 18, 27, 36, 45, 54, 63, 72
GCF (21, 49)
7
21: 1, 3, 7, 21
49: 1, 7, 49
LCM (5, 7)
35
5, 10, 15, 20, 25, 30, 35
7, 14, 21, 28, 35
Is 8 is factor of 32?
True
8 x 4 = 32
What are the factors of 36?
1, 2, 3, 4, 6, 9, 12, 18, 36
1x36, 2x18, 3x12, 4x9, 6x6
What are the first six multiples of 12?
What is 12, 24, 36, 48, 60, 72
GCF (30, 36)
6
30: 1, 2, 3, 5, 6, 10, 15, 30
36: 1, 2, 3, 4, 6, 9, 12, 18, 36
LCM (8, 20)
40
8, 16, 24, 32, 40
20, 40
Is 15 a factor and a multiple of 15?
True
A number is its own factor: 15: 1, 3, 5, 15
A number is its first multiple: 15, 30, 45,...