Câu 1:Một mảnh đất hình chữ nhật ABCD có chiều dài 33, 15 m, chiều rộng bằng 2/3 chiều dài. Người ta trồng rau trên mảnh đất đó. Cứ 2m2 thu hoạch được 5 kg rau. Tính số rau thu được? * Câu 2: Một công nhân sản xuất được 72 sản phẩm trong 3 giờ. Nếu công nhân đó, làm việc trong 6,5 giờ thì sản xuất được bao nhiêu sản phẩm? * Câu 3: Một bếp ăn dự trữ đủ gạo cho 30 người ăn trong 18 ngày, nhưng ăn được 3 ngày thì có 15 người đến thêm. Hỏi số gạo còn lại đủ ăn trong bao nhiêu ngày nữa ? * Câu 4: Một cửa hàng có 2,5 tấn gạo. Buổi sáng bán 1/5 số gạo của cửa hàng. Hỏi cửa hàng còn lại bao nhiêu tạ gạo? * Câu 5: Có 3 thùng dầu, thùng thứ nhất có 10,5l, thùng thứ hai có nhiều hơn thùng thứ nhất 3l, số lít dầu ở thùng thứ ba bằng trung bình cộng của số dầu trong hai thùng đầu. Hỏi cả 3 thùng có bao nhiêu lít dầu? *

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