1, PLA soldiers reclaimed a parallelogram vegetable field. Its bottom is 24 meters and its height is 16 meters. What is the area of this land?

2. Trapezoidal wheat experimental field with an upper bottom of 86m, a lower bottom134m and a height of 60m. How many square meters is its area? How many hectares?

3. Triangular land with a bottom height of 358m and a height of 160m. What is the area of this land? How many hectares?

Second, summarize the application questions

1. The People's Liberation Army Transportation Company transports a batch of coal. If each truck is loaded with 4.5 tons, it will take 16 cars to transport it at one time. If each truck is loaded with 6 tons, how many cars will it take to transport it all at once?

2. Students put flowers, each with 9 pots, which requires 36 people; If 18 people want to put it, how many pots should each person put?

Third, the application of three-step calculation method

Taiyanggou Primary School held a math knowledge contest. There are 60 participants in the third grade and 45 participants in the fourth grade. The number of participants in the fifth grade is twice that in the fourth grade. How many people took part in the competition in the third grade?

Fourth, meet the application problems

1, Zhang Ming and Li Hong set out from two places at the same time, facing each other. Zhang Ming walks 50 meters per minute and Li Hong walks 40 meters per minute. 12 minutes later, they met. How many meters are they apart?

2. The distance between Party A and Party B is 255km, and two cars leave both places at the same time. Car A travels 48 kilometers per hour and car B travels 37 kilometers per hour. Two cars meet in a few hours.

5. List simple equations to solve practical problems

Xiangqun Stationery Factory can produce 250 pencil boxes per hour. How many hours can you produce 10000?

2. The factory sent a batch of coal, burned 28 tons, and left 13 tons. How many tons is this batch of coal? (Answer in two ways)

Six, about the application of cuboids and cubes, the calculation of surface area and volume.

1, a rectangular iron box, length 18cm, width 15cm and height 12cm. How many square centimeters of iron does it take to make this iron box?

2. The side length of the cube is15cm. What is its surface area and volume?

1. Two trains leave from A and B at the same time, and meet at 48km after 4 hours. As we all know, the speed of the local train is five-sevenths that of the express train. What's the speed of the express train and the local train? How many kilometers is it between A and B?

2. With the cooperation of Party A and Party B, a batch of parts can be completed in 12 days ... After several days of cooperation, B asked for leave because of something, and B only completed three tenths of the total task. A went on doing it, and it took 14 days from the beginning to the completion of the task. Excuse me: How many days did A do it alone?

3. The construction of a section of highway was originally planned to be completed in 50 days for 120 people. After working for a month (calculated as 30 days), 20 people were transferred to repair other sections. How many days do the remaining staff need to work more than originally planned to complete the task?

1. What time does the train station clock strike? For example, 1 calls once, twice at 2 o'clock and once every half hour. How many times does this big clock strike every day and night?

4{$}. Leger, zW & amp[_ m0 Fan Boshu & kR+cD8_

Two cars drive from a to b at the same time. The car travels more than the big car12km/h. The bus will arrive in B in 4.5 hours. It returns along the original road and meets the cart at 3 1.5 km at B. How many kilometers does the cart travel per hour? Amateur Boshui IK9DBTC

j ' y/N9DCF \ f ' pj03。 A single hose can fill a pool in 40 minutes, and a single hose 1 hour can fill a pool. If two pipes are opened at the same time, how long will it take to fill three quarters of the whole pool? Uncle Bo: {w "Z2S0D3Q &; Rw'W8P5f

Amateur Boshu a6ZVz`R

4. Transport a batch of wheat with the same load, which is 5/6 of the total, 1 10 tons. How many tons are there in this batch of wheat?

Camping activities were held. At noon, the monitor went to the teacher in charge of logistics to get a bowl. The teacher asked, "How many people are there?" "One ***36." The monitor replied. Fans Boshu 4Y "kl5y "[E

The teacher said, "You can get it yourself, according to one person's rice bowl, two people's vegetable bowls and three people's soup bowls." This causes problems with the display. Can you help him?

9kExQC(Y/KA " E9qIB & amp； Boshu (\ d5rog 'xp0d), a Kn0 enthusiast.

6. There are 20 baskets of oranges, each weighing 27 kilograms. If each basket contains 1/9, how many kilograms is each basket? How many baskets can hold this basket of oranges?

Sgt 0x2j, M6 b v0 enthusiast Boshu 1I0C # f g! [+l$jM

7. A train can completely cross a 572-meter-long bridge in 64 seconds, while it only takes 20 seconds for the train to cross a tree on the roadside. How long is the train? Boshu% [yzl {。 d &； Title used by people who don't want to specify their gender.

Boshu1ry+pyayrx 5qb (h.

8. It takes 55 minutes for someone to travel from A to B at a speed of 12 km/h and from B to C, G and * * * at a speed of 9 km/h.. It takes 8km/yes to return from C to B, 4km/yes to return from B to A on Monday, and 1.5h to return to work. Find the distance between a and C.

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8d "I 1U，UG09。 An engineering team built a section of highway. A quarter of this road was built in the first week, and two-seventh was built in the second week. The second week is 2 kilometers more than the first week. How many kilometers is this road? Amateur Boshu% k&; g9Y%T%a5G3B#y

Boshu' R:euSw'|/@

10. The distance between Party A and Party B is 240 kilometers. The speed of the car from Party A to Party B is 36 kilometers per hour, and the speed of the motorcycle from Party B to Party A is 24 kilometers per hour. 2.5 hours after the motorcycle leaves from Party B, the car also leaves from Party A. How many hours after the car leaves? Fan boshu 0 7y Pim

Boshu |h oi ZS5[*O9\cj]

1 1. In order to meet the increasing demand of water consumption, Kunming recently built three water plants, A, B and C. The daily water supply of these three water plants is * *1/0.8 million cubic meters, of which the daily water supply of water plant B is three times that of water plant A and that of water plant C is/kloc-.

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. s0WD#c4P0dqs#vY！ Cf0 12。 A football ticket 15 yuan. After the price reduction, the audience increased by half and the income increased by one fifth. How much is the price reduction?

VA*DIP6hVQ0 Fan Boshu N 1e 1QR+j"@nf

13. A car travels from place A to place B within the scheduled time. If it is faster than the original regulation 12 km, it will arrive 39 minutes earlier, and if it is 8 km slower than the original regulation, it will arrive 39 minutes later. Find the distance between a and b.

14. Party A and Party B start from A and B at the same time and go in opposite directions. After meeting at a distance of 6 kilometers from B, they continued to move in the original direction. When they arrive at B and A respectively, they immediately return and meet at a distance of 4 kilometers. How many kilometers is the distance between A and B?

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It takes 20 days for Team A to do a job alone, and it takes 12 days for Team B to do a job alone. This work was first done by Party A for a few days, and then continued by Party B, and it took 14 days from beginning to end. Q: How many days did Party A and Party B do it?

+v:R9B'Z0Sg0 Boshu RVVO, a fan

16. There are 3200 chickens, ducks and geese on the farm. If chicken 1/3, duck 1/4 and goose 1/5 are sold, there will be 2400 poultry left. If you sell chicken 1/5 and duck 1/5. Boshu | yG3djM:[

6_+k！ TC3Y) G0 17。 One question: A and B are walking in the city. A It takes three hours to walk around the city. Now two people start at the same time, and B will walk for four hours to reach the original starting point after meeting A, so as to find out the time needed for B to go around the city. Boshu %cA[:ER(V, p

18. It is known that an iron bridge is 1000 meters long, and a train passes on the bridge. It takes 1 minute for the train to get on the bridge, and it takes 40 seconds for the whole train to completely cross the bridge. Find the length and speed of the train.

19. A woman is washing dishes by the river. People saw her and asked her why she used so many bowls. She replied that there were many guests at home. They share a dish bowl for every two people, a soup bowl for every three people, and a rice bowl for every four people, and * * * used 65 bowls. How many guests are there in her house?

20. Xiaoming has a packet of biscuits, and the number of four, five and six is more than one. How many biscuits does Xiaoming have in this bag?

1. Xiaoming reads a book. He originally planned to read 35 pages a day and finish it in 32 days. As a matter of fact, I read five more pages than planned every day. How many days did it actually take to read it?