Greatest Common Factor and Least Common Multiple
Math ⇒ Number and Operations
Greatest Common Factor and Least Common Multiple starts at 6 and continues till grade 12.
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See sample questions for grade 6
Explain the difference between GCF and LCM.
Find the GCF of 16, 24, and 40.
Find the GCF of 27 and 36.
Find the GCF of 36 and 48.
Find the GCF of 42 and 56.
Find the GCF of 45, 60, and 75.
Find the GCF of 50 and 75.
Find the LCM of 15 and 18.
Which of the following is a common factor of 18 and 24?
(1) 2
(2) 3
(3) 6
(4) All of the above
Which of the following is NOT a common factor of 20 and 30?
(1) 2
(2) 4
(3) 5
(4) 10
Which of the following is NOT a common multiple of 2 and 5?
(1) 10
(2) 20
(3) 25
(4) 30
Which of the following is the GCF of 15 and 25?
(1) 3
(2) 5
(3) 10
(4) 15
The GCF of 100 and 80 is _______.
The GCF of 14 and 49 is _______.
The GCF of 21 and 35 is _______.
The LCM of 10 and 12 is _______.
Is the LCM of two numbers always greater than or equal to both numbers? (Yes/No)
Is the LCM of two numbers ever less than both numbers? (Yes/No)
True or False: The GCF of a number and 1 is always 1.
True or False: The GCF of two even numbers is always even.
