2.800 cubic centimeters = () 2/3 liters = () minutes.
Saw a 3-meter-long cuboid wood into two sections. After sawing, the sum of the surface areas of the two sections of wood increased by 40 square centimeters. The volume of this kind of wood is () cubic centimeters.
4. A 4-meter-long cubic glass container. The bottom area of this glass container is () square decimeter. If you want to pour 2 minutes of water into it, you need () liters of water. (excluding glass thickness)
5. Three fifths of 15g is () g, and three fifths of () g is15g.
6. A rope is 6 meters long and needs 1/6, with () meters left. Now it needs 1/5 meters, with () meters left.
7. Simplify 5/3: 5/6 to (), and its ratio is ().
8. If 1/7 of the grain in Grain Depot A is transported to Grain Depot B, the grain reserves of the two granaries are equal. The original storage capacity of Grain Depot A is 28 tons, and that of Grain Depot B is () tons.