There are 20 rows of apple trees in the orchard, with 32 trees in each row. Each tree can pick 25 kilograms of apples. How many kilograms can a * * * receive?
3. A bottle of drink ***4 liters, and 22 cups are poured into a plastic cup with a capacity of 150 ml. How many milliliters of beverage are left in the beverage bottle?
A 600-meter-long highway will be built in Wangzhuang Village. It has been repaired for 12 days, and there is 168 meters left. How many meters are repaired on average every day?
5. Two trucks of cement are transported to the construction site, each truck 180 bags, each bag is 25 kg. How many kilograms of cement did a * * * deliver?
Miss Li bought five notebooks and two pens and spent the same amount of money. Given each pen 15 yuan, how much is each notebook?
There are 257 cocks and 268 hens on the farm, which are put in 35 cages on average. How many chickens are there in each cage?
8. A copybook 14 yuan and a set of pictures 15 yuan. Xiaoming bought 1 copybook and 2 sets of pictures. How much is a * * *?
9. For a beverage, the price of a large package of 4 liters is 16 yuan, and the price of a small package of 200 ml is 1 yuan. Which set meal do you think is cheaper?
10, an isosceles triangle with a known vertex of 52 degrees, what is its base angle? If its base angle is 52 degrees, what is its top angle?
1 1. There are 280 pear trees in the orchard, and the number of apple trees is half that of pear trees. The number of peach trees is 35 fewer than the total number of pear villages and apple trees. How many school trees are there?
12, the school bought 10 chairs and 8 desks, with each chair in 45 yuan and each desk 1 10 yuan. How much did it cost to buy a desk and chair (1)? (2) How much is the desk more than the chair?
13. There are 360 girls in a primary school. 160 Boys are twice as few as girls. How many students are there in the school?
14. There are 45 cypress trees in the park, and the number of pine trees is 20 times more than that of cypress trees. How many pine trees are there in the park?
15, the road team needs to repair roads, and Team A needs to repair 55 meters every day for 20 days; Team B has just finished repairing the road by repairing 48 meters every day for 25 days. How long is this road?
16, Xiaohong read a story book, *** 180. Read 15 pages every day. Read 10 days, 6 pages a day. How many days will it take to finish reading?
17. If a floor tile with an area of 60 square meters is used to lay the floor of a classroom, it will cost 80 pieces. If you use a square brick with a side length of 5 minutes to pave the floor, how many pieces do you need?
18, one car carries four passengers, and one bus carries five times as many passengers, with two less passengers. The number of passengers in a bus is more than the total number of cars and buses 1 1. How many passengers can a bus carry?
19. Make a rectangle with a length of 32 cm. If the length is 10 cm, what is its width? How many square centimeters is the area of this rectangle?
20. A rectangular classroom, 5 meters wide and 15 meters long. If the ground is paved with square bricks with a side length of 5 meters, how many pieces are needed?
2 1, rectangular lawn, length12m, width 8m. Build a road around it. How long is this road?
Xiaoming's father has two suits and three ties. Today he went to the company for a meeting, wearing a suit and tie. How many collocation methods are there?
23. Planting trees in Canghai Community, with 3 rows of poplars, 3 rows of willows, 20 rows of pines and 2 rows of poplars, each row of 18 plants. How many poplars are less than willows? How many poplars and pine trees are there?
24. Xiaohua's new house was renovated and bought two different paints. I bought seven barrels of red paint and 65,438+03 barrels of white paint, and each barrel of paint was 65,438+05 liters. How many liters of paint did Xiaohong buy? How many liters of white paint is more than red paint?
25. Recycling waste paper 1 ton can produce 850 kilograms of recycled paper, saving 300 kilograms of chemical raw materials, saving 600 kWh of electricity and saving water 100 ton. (1) A waste recycling station recycles 80 tons of waste paper. How many kilograms of chemical raw materials can be saved by using some paper? (2) How much kilowatt-hour does B waste recycling station save by recycling 42 tons of waste paper?
26. Car A and car B start from the same place at the same time and drive in opposite directions. Car A travels 45 kilometers per hour and car B travels 65 kilometers per hour. After 5 hours, how many kilometers are the two cars apart?
27. Xiaohong and Xiaoming start from home in equal quantities, and meet in the square in 15 minutes. Xiaohong walks 40 meters per minute, Xiaoming walks 60 meters per minute. How many meters is there between Xiaohong's house and Xiaoming's house? After arriving at the square, Xiaohong and Xiaoming walked to Xinhua Bookstore at the same time. When Xiaoming arrived, how many meters was Xiaohong from Xinhua Bookstore?
28. A rectangular concrete floor is 65,438+08 meters long. If its length is increased by 3 meters, its area will increase by 15 square meters. How many square meters was the original cement floor?
29. If the side length of a square lawn is increased by 2 meters, its area will increase by 28 square meters. What was the area of the original square lawn?
30. A rectangular lawn is 8 meters long and 4 meters wide. If its length and width increase by 2 meters, how many square meters will its area increase?