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### Grade 8 - Mathematics5.6 L.C.M.

 Example: Find the L.C.M. of 60 and 72. Solution: Prime factors of 60 = 2 * 2 * 3 * 5 Prime factors of 72 = 2 * 2 * 2 * 3 * 3 The common prime factors of 60 and 72 are 2, 2 and 3 The remaining prime factors of 60 are 5. The remaining prime factors of 72 are 2 and 3. Therefore, L.C.M. = Common prime factors of 60 and 72 * the prime factors left in 60 * the prime factors left in 72. = 2 * 2 * 3 * 2 * 3 * 5. = 360. Therefore, L.C.M. of 60 and 72 is 360. Directions: Solve the following problems. Also write at least ten examples of your own.
 Q 1: Find the L.C.M. of 72 and 126.420480380504 Q 2: Find the L.C.M. of 30 and 80.140180160240 Q 3: Find the L.C.M. of 124 and 248.124248148None of these Q 4: Find the L.C.M. of 24 and 56.168158178148 Q 5: Find the L.C.M. of 24 and 72.72366448 Q 6: Find the L.C.M. of 56 and 88.416716616516 Q 7: Find the L.C.M. of 12, 36 and 48.988648144 Q 8: Find the L.C.M. of 24 and 36.3672None of these48 Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!

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