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Ben and Amy are building stacks using bricks. Ben is using 5cm bricks and Amy is using 3cm bricks. At how many centimetres will their stacks become the same hight?
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First, list the multiples of 5, then the multiples of 3. Continue until you find a common multiple (a number that is on both lists).
Find the least (lowest) common multiple of 3 and 9.
Find the least (lowest) common multiple of 8 and 12.
Find the least (lowest) common multiple of 5 and 10.
Find the least (lowest) common multiple of 10 and 15.
Find the least (lowest) common multiple of 20 and 25.
Find the least (lowest) common multiple of 18, 24, and 36.
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