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20 questions
What is the missing factor?
1
2
5
8
What are the missing factors?
2 and 3
3 and 6
3 and 3
1 and 9
List all the factors of 29.
29 does not have any factors.
1, 29
29
A prime number
has one factor
has more than 2 factors
has exactly 2 factors: 1 and the number itself
is 3 prime number or composite number?
prime
composite
Use a factor tree to find the prime factorisation of 168
Find the prime factorization of 18
2 • 9
22 • 3
2 • 32
3 • 6
Find the prime factorization of 60
5 • 12
2 • 32 • 5
22 • 3 • 5
27
Find the prime factorization of 30
22 • 5 • 7
2 • 32
2 • 3 • 7
2 • 3 • 5
Find the prime factorization of 81
22 • 7
23 • 5 • 7
43
34
Find the prime factorization of 81
22 • 7
23 • 5 • 7
43
34
What is the GCF of 18 and 24?
3
6
8
9
Find the LCM (Least Common Multiple) of 18 and 24.
6
72
24
5
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