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用边长30厘米的正方形地砖铺一段长12米,宽6米的人行道路面.

①至少需要多少块这样的地砖?

②如果地砖每平方米的售价是35元,那么购买地砖至少应花多少元?

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正确答案:

解:① 12× 6÷( 0.3 × 0.3)

=72÷ 0.09

=800(块)

②12× 6× 35=2520(元)

答:至少需要 800 块这样的地砖,购买地砖至少应花2520元

答案解析:

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