3.Một người thợ dệt ngày thứ nhất dệt được 26,5m vải,ngày thứ hai nhiều hơn ngày thứ nhất 2,4m vải,ngày thứ ba dệt nhiều hơn ngày thứ hai 1,2m vải.Hỏi cả ba ngày người đó dệt được bao nhiêu mét vải? 4.Một cửa hàng buổi sáng bán được 182,5kg gạo nếp.Buổi chiều bán được ít hơn buổi sáng 30kg.Hỏi cả ngày cửa hàng bán được bao nhiêu kg gạo nếp? 5.Một hình vuông có đọ dài cạnh là 24,5cm.Tính chu vi của hình vuông đó? 6.Một ô tô trong hai giờ đầu,mỗi giờ đi được 55,6km và trong 3 giờ sau mỗi giờ đi được 46,5km.Hỏi trong 5 giờ đó ô ô đi được bao nhiêu km?

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