填空.1.把五分之四米长的钢管平均截成3段,每段是这根钢管的(几分之几),每段长是(几分之几).2.一件商品售价135元,比原价降低了15元,降低了( )%判断对错.1.大圆的圆周率大于小圆的圆周率.( )2.
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![填空.1.把五分之四米长的钢管平均截成3段,每段是这根钢管的(几分之几),每段长是(几分之几).2.一件商品售价135元,比原价降低了15元,降低了( )%判断对错.1.大圆的圆周率大于小圆的圆周率.( )2.](/uploads/image/z/183396-12-6.jpg?t=%E5%A1%AB%E7%A9%BA.1.%E6%8A%8A%E4%BA%94%E5%88%86%E4%B9%8B%E5%9B%9B%E7%B1%B3%E9%95%BF%E7%9A%84%E9%92%A2%E7%AE%A1%E5%B9%B3%E5%9D%87%E6%88%AA%E6%88%903%E6%AE%B5%2C%E6%AF%8F%E6%AE%B5%E6%98%AF%E8%BF%99%E6%A0%B9%E9%92%A2%E7%AE%A1%E7%9A%84%28%E5%87%A0%E5%88%86%E4%B9%8B%E5%87%A0%29%2C%E6%AF%8F%E6%AE%B5%E9%95%BF%E6%98%AF%28%E5%87%A0%E5%88%86%E4%B9%8B%E5%87%A0%29.2.%E4%B8%80%E4%BB%B6%E5%95%86%E5%93%81%E5%94%AE%E4%BB%B7135%E5%85%83%2C%E6%AF%94%E5%8E%9F%E4%BB%B7%E9%99%8D%E4%BD%8E%E4%BA%8615%E5%85%83%2C%E9%99%8D%E4%BD%8E%E4%BA%86%28+%29%25%E5%88%A4%E6%96%AD%E5%AF%B9%E9%94%99.1.%E5%A4%A7%E5%9C%86%E7%9A%84%E5%9C%86%E5%91%A8%E7%8E%87%E5%A4%A7%E4%BA%8E%E5%B0%8F%E5%9C%86%E7%9A%84%E5%9C%86%E5%91%A8%E7%8E%87.%28+%292.)
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