Class name score

Fill in the blanks. (22 points)

1, square meter = () square decimeter 2 hectares 40 square meters = () square meter

2、7÷( ) = ( ): 12 = 25% =

3. A and B are reciprocal, and the product of A and B is ().

The ratio of numbers a and b is 5: 2. The average of these two numbers is 4.2, and the number A is ().

5.90 meters is ()% of 1 km, 30 kilograms is more than () kilograms, and () tons is less than 20 tons. An increase of 0.8 tons is 1 ton.

6. A car travels 60 kilometers per hour, () kilometers, and it takes () hours to travel 1 kilometer.

7. Arrange π,,, 3. 14 in descending order.

8. Last month, the people's canteen actually used 3.4 tons of coal, saving 20% than planned and () tons.

9. The length of a wire is18.84m.. Bend it into a circle with a diameter of () meters and an area of () square meters.

10. In mid-May, cloudy days were less than sunny days, rainy days were less than sunny days, and this month () was sunny.

1 1, a plastic rope was cut and then connected to 6 decimeters. At this time, it has exceeded the original length. The original length of this plastic rope is () decimeter.

12, semi-circular, with a circumference of 25.7 cm and an area of () square cm.

Second, the judgment question. (5 points)

1. Among parallelogram, rectangle, square and circle, the circle has the largest area. ………( )

2. 1 ton 2 tons with a weight of 10%. ……………………………………( )

3. Master Wang made 100 parts, of which two were unqualified and two were qualified. The qualified rate of these parts he made is 100%. …………………………………………………… ( )

4. If the number of A is twice that of B, then the number of A is 50% more than that of B. ........................ ()

5. Two circles with equal perimeters must have the same area. ………………………………( )

Third, multiple choice questions. (5 points)

1, there are more boys than girls in one class, and girls account for ()

A、

2. The radius of the circle increases by 10% and the area increases by ()%.

a、 10 B、30 C、 1 D、2 1

3. A basket of apples is as heavy as a basket of apples, so ().

A, the weight of basket A is B, the weight of basket B is C, and the same weight is D, which is uncertain.

4. In the salt water with salt content of 5%, the ratio of salt to water is ().

a、 1: 19 B、 1:20 C、 1:2 1 D、20: 1

5, from a pile of coal to b pile of coal, the weight of the two piles of coal is equal, the original weight ratio of a and b piles of coal is ().

a、7:5 B、7:3 C、7:2 D、9:7

Fourth, the calculation problem.

1, write directly. (5 points)

2. Solve the equation. (4 points)

1—20%x=0.4 1

3. Simply calculate the following questions. (12)

62.5%× 15+2× -5÷8

4. Column calculation. (9 points)

(1) 75% of a number is 2 and less than 25. What's this number?

(2) What is the quotient of the sum and division of12 and 6?

(3) A number is 2 less than its number. What's this number?

Fifth, the application problem. (38 points)

1, only column types are calculated, not calculated.

(1) The actual investment in building a research institute is 360,000 yuan, which is 40,000 yuan less than the original plan. What percentage is saved?

(2) To print the manuscript, it takes 8 hours for Party A to type alone, and 12 hours for Party B to type alone. After two people played together for a while, there was no typing left. They played together for several hours.

(3) There were 48 people in Class 6 (1) who arrived at the school yesterday, and two of them asked for leave. What's the attendance rate on this day?

(4) Uncle Li deposited 2,000 yuan in the bank for two years, with an annual interest rate of 2.25%. How much did he get back from the bank after the expiration?

Xinxin clothing factory wants to produce a batch of school uniforms. The ratio of the number of completed uniforms to the number of unfinished uniforms in the first week is 1: 3. If 250 sets are produced, the school uniform will be half finished. How many school uniforms are there?

3. The perimeter of the rectangular experimental field is 120m, and the known length-width ratio is 2: 1. How many hectares is this experimental field?

There are 28 boys in the swimming team, two less than girls. How many members are there in the swimming team?

5. A shopping mall sold 150 TV sets in early February, less than1mid-February and 50% more than1early February. How many TV sets were sold in this shopping center1February?

6. Warehouse A and Warehouse B have 200 tons of grain. If warehouses A and B have 44 tons of grain, how many tons of raw grain do warehouses A and B have?

7. Two cars, A and B, walked in opposite directions from A and B at the same time. A car had a meeting for six hours, and then it took another four hours to get to B. Q: How many hours did it take for B car to get to A after the meeting?

Additional questions. (10)

1, two piles of yellow sand ***5.7 tons, the first pile is used, the second pile is used, and the remaining two piles are combined, which is less than the original first pile. How many tons was the first pile?