20 10 Zhaoqing Xiaoshengchu Examination Paper Zhenti

1.26048 million is written as (), and if it is rewritten as "ten thousand", it means () ten thousand.

2, 3/4, 0.76 and 68%, the maximum number is () and the minimum number is ().

3. The largest three digits that can be divisible by 2, 3 and 5 at the same time is ().

4. When the ratio of boys to girls in a class is 4:5, boys account for () and girls account for () class.

Dad said, "My age is four times that of Xiaoming." Xiao Ming said, "I am one year old." Use a formula containing letters to express dad's age, and write it as (); If Xiaoming is 8 years old this year, then Dad is () years old this year.

6. A number divided by 6 or 8 is greater than 2, and the minimum number is (); A number divided by 160+4 and 240+6, the maximum number is ().

7.8/() ÷ () = () ÷ 60 = 2: 5 = ()% = ().

8. At 3.0 14, 3.3 14%, 3. 1 and 3. , the largest number is (), the smallest number is ().

9. The circumference of a circle is 12.56 cm, and its area is () square cm.

10. If a = b/c (c ≠ 0), () is inversely proportional to () when fixed; () At a certain moment, () and () are in direct proportion.

Second, the application problem

1, Master Wang processed a batch of parts. It was originally planned to process 30 pieces per hour, which can be completed in 6 hours. In fact, the processing capacity per hour is 20% more than originally planned. How many hours are the actual processing of these parts ahead of schedule?

2. Cylindrical oil drums with an inner diameter of 40 cm and a height of 50 cm. If diesel weighs 0.85 kg per cubic decimeter, how many kg of diesel can this oil drum hold?

Wang flew to the library in the mountains to borrow books. He climbed the mountain at a speed of 3 kilometers per hour and returned from the original road at a speed of 6 kilometers per hour. Ask him for the average speed of going up and down the mountain.

4 kilometers

The bus and truck run in opposite directions from the midpoint of A and B at the same time. Five hours later, the bus arrived at A, and the truck was 60 kilometers away from B. It is known that the speed ratio of the truck to the bus is 5:7. How many kilometers is it between A and B?

5. Hope Primary School originally planned to buy 12 rubber balls at 0.84 yuan each. Of the money spent on this ball, 1.68 yuan spent it on skipping rope. How many rubber balls can I buy with the remaining money?

6. There is a batch of goods in the warehouse, and the weight ratio of the transported goods to the remaining goods is 2:7. If 64 tons are transported, the remaining goods are only the original goods in the warehouse. How many tons are there in the warehouse?

7. Party A and Party B jointly completed 242 machine parts. A it takes 6 minutes to make a part, and B it takes 5 minutes to make a part. When they finished this batch of parts, how many parts did each of them make?

Attached answer:

1. Fill in the blank: 1, (260048000) (26004.8); 2、(0.76)(68%); 3、(990); 4、4/9 ,5/9 ; 5 、( 4a+3)(35)； 6、(26)(78); 7. Omit; 8、(3 )(3.0 14); 9.( 12.56) 10, omitted;

Second, the application problem

1, 1 (days)

2,53.18 (kg)

3.4 km

4360 kilometers

5 10 (unit)

6360 (ton)

7. A: B =1/6:1/5: = 5: 6, A: 242× 5/5+6 = 1 10 (pieces), B: 242× 6/5.