1, and fill in the appropriate numbers in brackets.

2. 1 m2 = () square decimeter 2.04 cubic meters = () cubic decimeter

0.08 m3 = () l = () ml 3.8 l = () l () ml.

2. Both cuboids and cubes have () faces, () edges and () vertices.

3. The three sides of a cuboid intersecting at a vertex are 5cm, 3cm and 4cm respectively, and the sum of all sides of this cuboid is () cm. The volume is ()

4. The volumes of cuboids and cubes can be expressed by the letter formula ().

The bottom area of a cube is 2 square centimeters, and its surface area is () square centimeters.

6. Make a cuboid with the largest surface area by using three cuboid blocks with a length of 5cm, a width of 3cm and a height of 2cm. The surface area of this cuboid is () square centimeters.

Second, fill in the form. (18)

Third, judge the question. (misspelled or misspelled in brackets) (10)

1, a rectangular wooden box, placed vertically and horizontally, occupying different spaces. ( )

The volume and volume of a 2.2 mm thick iron suitcase are completely equal. ( )

When the side length of a cube is doubled, its surface area is increased by 8 times. ( )

4. Two cubes with the same volume must have the same surface area. ( )

5. An uncovered cubic iron box with a side length of 1 m and a surface area of 5 square meters. ( )

5. Calculate the following questions. (16)

6.8+ 6.8×6.8 – 1.5× 6.8 (3.6+ 12.03÷ 0.3 ) × 2.5

1.25× 0.25×8× 0.4 96.356 ×(5.9 + 5. 1 - 10)

6. Automobile fuel tank, 8 decimeters long, 5 decimeters wide and 3.5 decimeters high. How many square decimetres of iron does it take to make this fuel tank? How many liters of gasoline can this tank hold? (8 points)

Eight, use a 36 cm long wire to make the largest cubic frame, and paste white paper on the outside of the frame. How many square centimeters of white paper do you need? (7 points)

9. Forging a cubic steel block with a side length of 6 decimeters into a rectangular steel ingot with a cross-sectional area of 4 square decimeters. How long is this ingot? (7 points)

Additional questions: (10)

A cuboid with a square bottom, the sum of all sides is 100 cm and the height is 7 cm. What is the volume of this cuboid?