Understanding LCM and GCF Quiz Welcome to your Understanding LCM and GCF Quiz Please click "Next" Determine the GCF What is the Greatest Common Factor of 5 and 25 5 25 10 None Determine the GCF What is the Greatest Common Factor of 12 and 16 8 4 12 None Determine the LCM What is the Lowest Common Multiple of 3 and 5 10 15 8 None Determine the LCM State the Least Common Multiple of 6 and 12 72 12 64 None Determine the GCF State the Greatest Common Factor of 16 and 24 12 6 8 None Determine the LCM What is the Lowest Common Multiple of 6 and 9 18 3 9 None Time's up