Math Questions

3. Lowest Common Multiple (LCM) / Multiples


  • 1 What is meant by the "lowest common multiple (LCM)'.
  • 2 How to find the lowest common multiple (LCM) by listing the multiples of each number and comparing them.

Time to Complete: 6 minutes

Q1 of 6
0/1
What is a Multiple?
Q2 of 6
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What is the lowest common multiple (LCM)?
Q3 of 6
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What is the lowest common multiple (LCM) of 9 and 12?
Q4 of 6
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What is the lowest common multiple (LCM) of 24 and 36?
Q5 of 6
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Two lights flash every 20 and 30 seconds. How many seconds until they flash at the same time?
Q6 of 6
0/1
A bell rings every 12 minutes and another every 18 minutes. How long until both ring together again?
36 6 6 2 3 2 3 2 × 2 × 3 × 3 36 = 2² × 3²
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Next Lecture: 2. Highest Common Factor (HCF)
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