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The teacher's kitchen is 30 decimeters long and 24 decimeters wide Would you please help me to think about it, how many decimeters of square tiles are needed to make it neat and fast?
This is a problem of finding the greatest common divisor
The maximum common divisor of them is 6 decimeters, that is, 6 decimeters × 6 decimeters square tiles are just right. A total of 20 such tiles are needed
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