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Factors, Multiples and Primes
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Is 2 prime?
Yes
Is 1 prime?
No
What is the 4th prime number?
7
What is the 5th prime number?
11
Write 28 as a product of prime factors
2x2x7
Write 15 as a product of prime factors
3x5
What is the LCM of 11 and 3?
33
What is the LCM of 4 and 8?
8
What is the LCM of 6 and 4?
12
What is the LCM of 6 and 5?
30
What is the HCF of 18 and 36?
18
What is the HCF of 11 and 20?
1
What is the HCF of 14 and 35?
7
What is the HCF of 6 and 15
3
What is the 9th multiple of 3?
27
What is the 8th multiple of 4?
32
What are the first 5 multiples of 7
7, 14, 21, 28, 35
What are the first 5 multiples of 6
6, 12, 18, 24, 30
List the factors of 30
1, 2, 3, 5, 6, 10, 15, 30
List the factors of 24
1, 2, 3, 4, 6, 8, 12, 24
List the factors of 26
1, 2, 13, 26
List the factors of 8
1, 2, 4, 8