Mr. Gao's living room has 16 square meters, with 8 decimeter long floor tiles. How many such tiles do you need?

The area of each tile is 0.8x0.8 = 0.64 square meters, and 16 / 0.64 = 25 tiles are needed for 16 square meters of ground. Of course, this is the theoretical value, and there is a loss in actual implementation

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