1, draw the distance of 15km on the map with a 3cm line segment, then the scale of this map is (). On the map with the scale of 5: 1, the measured length of the part is 2.5㎝, and the actual length of the part is ().

2. Tons = () Kg hours = () hours () minutes

3. The circumference of the bottom surface of the cylinder is 9.42 decimeter, and the height is 10 decimeter. Its surface area is () square decimeter and its volume is () cubic decimeter.

4,3: 8 =18÷ () = ()% = () decimal

5.y = 8 x, y is proportional to x (), and the radius of the circle is proportional to the length of the circle ().

6. If ab=3, then A and B are proportional to (); If a = 3b (neither a nor b is 0), then a and b are directly proportional to ().

7. The divisor of12 is (). Choose four of them to form the ratio of ().

8. 0.5×80=4× 10 is rewritten into a proportional formula, which may be ().

( )。

9. A cylindrical iron drum with a capacity of 502.4 liters, with a bottom diameter of 0.8 meters and a drum height of () meters.

10, -8 is on the () side of -5 on the number axis, so -8 is greater than -5 ().

Second, the judgment (10)

1, people's weight is out of proportion to their height. ( )

2, the scale is certain, the actual distance is proportional to the distance on the map ()

The volume of a cylinder is three times that of a cone. ( )

4.-5℃ must mean -5℃.

5. The larger the bottom area of the cylinder, the larger the volume. ( )

Iii. Multiple choice questions (10)

1, the ratio of energy to 3: 8 is ()

a、8 ∶3 B、0.2 ∶ 0.5 C、 15 ∶40

2. Measure the distance from Nanjing to Beijing on the map with the scale of 1∶6000000.

Yes 15 cm, and the actual distance from Nanjing to Beijing is about () km.

A, 800 km b, 90 km c, 900 km

3. There are two cylinders and cones with the same base radius, and the height ratio is 4: 5. cylinder

The volume of is 60 cubic centimeters, and the volume of the second cylinder is () cubic.

Centimeter. a、25 B、75 C、20

4. The diameter of the bottom surface of the cylinder is 0.5m, the height is 1.8m, and the lateral area is () m2.

A, 9 B, 2.83 C, about 2.83

5. The width of a rectangle is constant, and its area and length ().

A, proportional to B, inversely proportional to C, out of proportion

Fourth, calculation

1, the number written directly (10 points)

5- 1.4-2.6=

2. Calculation of parting: (16)

Short calculation: solution ratio:

Verb (abbreviation of verb) Application question: (18 points)

1, a car driving for 3 hours 135 km. According to this calculation, how many hours does it take to drive 3 15 kilometers? (Use proportional solution)

2. Cast a cylindrical steel with a radius of 3 cm and a length of 12 cm into a cone with the same bottom. What is the height of the cone?

3. A cylindrical uncovered tin bucket, with a height of 12 decimeter and a large bottom diameter. How many square decimeters should I use to make this bucket? (integer reservation 1)

Xiaoming's mother bought the same square brick floor. If you want to make a bedroom of 36 square meters.

With 144, how many square bricks does it take to pave a 50-square-meter living room?

(Answer with proportional knowledge)

A car of the transportation company transported a batch of materials from place A to place B as planned.

75 kilometers per hour, 4 hours to arrive. Now that the situation has changed, it needs 3

How many kilometers does it take to arrive in an hour? (Answer with proportional knowledge)

6. A cone with a volume of 48 cubic decimeters, a height of 3 decimeters and a bottom area of

How many square decimetres?