LCM Questions for Class 6

LCM Questions for Class 6

LCM Worksheet – Class 6

Section A: Find the LCM

Find the LCM of the following numbers:

  1. 4, 6 → __________
  2. 8, 12 → __________
  3. 5, 15 → __________
  4. 9, 12 → __________
  5. 7, 14 → __________

Section B: Find the LCM of Three Numbers

  1. 2, 4, 6 → __________
  2. 3, 5, 15 → __________
  3. 6, 8, 12 → __________
  4. 4, 5, 20 → __________
  5. 3, 7, 14 → __________

Section C: Word Problems

  1. Two bells ring every 6 minutes and 8 minutes respectively. If they ring together at 10:00 AM, when will they ring together next? __________
  2. A bus starts from a station every 12 minutes and a car leaves every 15 minutes. If both leave together at 9:00 AM, when will they leave together again? __________
  3. Riya takes piano lessons every 4 days and dance classes every 6 days. If she attends both classes today, after how many days will she attend both classes again on the same day? __________
  4. Two machines produce items every 5 minutes and 7 minutes. They start together at 8:00 AM. When will they produce together again? __________

Section D: Challenge Questions

  1. Find the LCM of 12, 18, and 24 → __________
  2. Find the LCM of 15, 20, and 25 → __________
  3. Find the LCM of 9, 12, and 15 → __________
  4. Find the LCM of 6, 14, and 21 → __________
  5. Find the LCM of 8, 10, and 12 → __________

Answer Key (Optional for Teacher)

Section A:

  1. 12
  2. 24
  3. 15
  4. 36
  5. 14

Section B:

  1. 12
  2. 15
  3. 24
  4. 20
  5. 42

Section C:

  1. 10:24 AM
  2. 9:00 AM + 60 minutes = 10:00 AM
  3. 12 days
  4. 8:35 AM

Section D:

  1. 72
  2. 300
  3. 180
  4. 42
  5. 120