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What is the lowest common multiple of 12, 21 and 28?
84
What is the highest common factor of 12, 15, and 18?
3
What are the first 3 common multiples of 6 and 9?
18, 36, 54
How many prime numbers are there from 1 to 100?
25
What is the lowest common multiple (LCM) of 6 and 8?
24
Is 40 a multiple of 5? Why?
Yes, because 40 can be divided exactly by 8.
What is the highest common factors of 18 and 30?
6
What are the 3 methods to find the HCF and LCM?
Listing Method, Prime Factorization Method, Repeated Short Division
What are the common factors of 6 and 9?
1 and 3
Is the lowest quantity that is a multiple of two or more given quantities.
Lowest Common Multiple (LCM)
A result in multiplying one number to another number.
Multiple
It is the highest number that can be divided exactly in each of two or more numbers.
Highest Common Factor (HCF)
What are the first 5 prime numbers?
2, 3, 5, 7, 11
A shortcut for writing repeated multiplications by the same number.
Index Notation
It is the method of finding the multiplication of prime factors to get the original number.
Prime Factorization
These are factors which are prime numbers.
Prime Factors
It has more than 2 factors. It can be divided exactly by a whole number besides 1 and itself.
Composite Number
It is a whole number greater than 1 that has only 2 factors, 1 and itself.
Prime Number
These are the numbers you multiply together to get a product.
Factors


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