HCF and LCM Questions - Worksheet for Class 5 Maths | CBSE NCERT HCF and LCM Worksheet for Class 5. HCF and LCM Questions. I. Find the Highest Common Factor (HCF) or the Greatest Common Factor (GCF) of the following using the long division method:. 48, 75; 78, 52, 23; 84, 96, 63; 154, 87; 96, 54, 75 . II. Find the HCF or GCF of the following using the factorisation method: