Factors and Multiples
Math ⇒ Number and Operations
Factors and Multiples starts at 6 and continues till grade 12.
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See sample questions for grade 8
Explain how to find the GCF of two numbers using their prime factorization.
Explain the difference between a factor and a multiple.
Explain why every number is a multiple of itself.
Find all the common factors of 18 and 24.
Find the GCF of 42 and 56.
Find the GCF of 63 and 81.
Find the LCM of 14 and 20.
Find the LCM of 9, 12, and 15.
If a number is a multiple of 8, which of the following must also be true?
(1) It is a multiple of 2
(2) It is a multiple of 4
(3) It is a multiple of 16
(4) It is a multiple of 3
If a number is a multiple of 9, which of the following must also be true?
(1) It is a multiple of 3
(2) It is a multiple of 6
(3) It is a multiple of 27
(4) It is a multiple of 18
Which of the following is a common multiple of 3 and 4?
(1) 6
(2) 8
(3) 12
(4) 18
Which of the following is NOT a factor of 100?
(1) 2
(2) 4
(3) 5
(4) 12
Fill in the blank: The GCF of 14 and 49 is _______.
Fill in the blank: The GCF of 32 and 48 is _______.
Fill in the blank: The greatest common factor (GCF) of 24 and 36 is _______.
Fill in the blank: The LCM of 15 and 25 is _______.
If a number is divisible by both 2 and 3, is it always divisible by 6?
Is 17 a multiple of 3?
True or False: Every number is a factor of itself.
True or False: The GCF of two consecutive numbers is always 1.
