Multiplication Facts
Multiples & Common Multiples
Factors & Common Factors
LCM
GCF
100
3 x 8 = ?
24
100
What are the first 5 multiples of 4?
4, 8, 12, 16, 20
There are an INFINITE number of multiples of 4. These are just the first 5.
100
What are the factors of 5?
1 and 5
The only factors of 5 are ONE and ITSELF! That makes 5 a PRIME NUMBER!
100
What is the LCM (Least Common Multiple) of 12 and 24?
Multiples of 12: 12, 24, 36, 48, ...
Multiples of 24: 24, 48, ...
LCM = 24
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100
What is the GCF (Greatest Common Factor) of 12 and 24?
Factors of 12: 1, 2, 3, 4, 6, 12
Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24
GCF = 12
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200
5 x 8 = ?
40
200
What are the first 5 multiples of 9?
9, 18, 27, 36, 45
There are an INFINITE number of multiples of 9. These are just the first 5.
200
What are the factors of 28?
1, 2, 4, 7, 14, 28
1 x 28 = 28
2 x 14 = 28
4 x 7 = 28
200
What is the LCM (Least Common Multiple) of 10 and 15?
Multiples of 10: 10, 20, 30, 40, ...
Multiples of 15: 15, 30, 45, ...
LCM = 30
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200
What is the GCF (Greatest Common Factor) of 10 and 12?
Factors of 10: 1, 2, 5, 10
Factors of 12: 1, 2, 3, 4, 6, 12
GCF = 2
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300
10 x 11 = ?
110
300
Which is NOT a multiple of 6?
6, 10, 12, 18
10
6 x 1 = 6
6 x 2 = 12
6 x 3 = 18
300
Which is NOT a factor of 30?
1, 2, 3, 4, 5
4
1 x 30 = 30
2 x 15 = 30
3 x 10 = 30
6 is also a factor of 30 since 5 x 6 = 30!
300
What is the LCM (Least Common Multiple) of 12 and 15?
Multiples of 12: 12, 24, 36, 48, 60, 72, ...
Multiples of 15: 15, 30, 45, 60, 75, ...
LCM = 60
USE DESMOS!
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300
What is the GCF (Greatest Common Factor) of 6 and 9?
400
9 x 7 = ?
63
400
Which numbers below have a common multiple of 20?
5, 6, 8, 10
5 and 10
5 x 4 = 20
10 x 2 = 20
400
Which numbers below have a common factor of 5?
5, 12, 16, 20, 25
5, 20, and 25
1 x 5 = 5
4 x 5 = 20
5 x 5 = 25
400
What is the LCM (Least Common Multiple) of 3 and 4?
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, ...
Multiples of 4: 4, 8, 12, 16, ...
LCM = 12
USE DESMOS!
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400
What is the GCF (Greatest Common Factor) of 40 and 100?
Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40
Factors of 100: 1, 2, 4, 5, 10, 20, 25, 50, 100
GCF = 20
USE DESMOS!
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500
6 x 8 = ?
48
500
Which numbers below have a common multiple of 24?
2, 3, 4, 5, 6
2, 3, 4, & 6
2 x 12 = 24
3 x 8 = 24
4 x 6 = 24
500
Which numbers below have a common factor of 6?
8, 12, 16, 20, 24
12 and 24
2 x 6 = 12
4 x 6 = 24
500
What is the LCM (Least Common Multiple) of 6 and 9?
Multiples of 6: 6, 12, 18, 24, 30, 36, ...
Multiples of 9: 9, 18, 27, 36, 45, ...
LCM = 18
USE DESMOS!
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500
What is the GCF (Greatest Common Factor) of 5 and 9?
