Maths Hcf And Lcm Worksheet, 1 LCM and HCF Worksheets Printable PDFs. Find the GCF of the following set of numbers. 4 Two number are in the ratio 15. 5 The HCF of two numbers is 11 and their LCM is 693. Sample CBSE Class 4 Maths HCF and LCM Worksheet Questions. Instructions Use black ink or.