52 1-2 1× 12+88 305-(60+240÷40)

(82-936÷78)× 15 480-280÷40× 18

540÷[ 360÷(720÷6)+6 ] ( 1 10-96)×(65+ 15)

Second, solve the problem.

1. The master produces 480 parts in 8 hours, and the apprentice produces 46 parts per hour. How many parts do apprentices and masters produce per hour?

2. Two cars, A and B, set off from AB at the same time, face to face and met on the road of 12 hours. It is known that car A travels 50 kilometers per hour, which is 5 kilometers more than car B.. How many kilometers are there between AB and AB?

There are 850 kilograms of rice in the canteen, 50 kilograms is more than five times of flour.

How many kilograms of rice and flour are there in (1)?

(2) How many kilograms is rice more than flour?

There are 30 story books and 30 literature books in the library. The total price of story books is less than that of literature books 120 yuan, and each story book 15 yuan. How much is each literary book? (two methods)

5. If the floor tile of Xiaoming's living room is paved with a square brick with a side length of 4 cents, it will cost 180. If it is paved with a square brick with an area of 9 decimeters, how many pieces do you need?

6. Construction of road 1.800 meters. In the first five days, 240 meters were built every day. The remaining four days will be completed. How many meters will the rest be built on average every day?

7. Master Wang wants to process a batch of parts. 12 days ago, * * processed 180 parts. According to this calculation, it will take another week to complete the task. How many parts are there in this batch? (two methods)

8. The car goes from A to B, with a planned speed of 60 kilometers per hour and 7 hours to arrive; Actually, my speed is 10 km, so I can get to B a few hours earlier.

9. A basket of apples sold more than half of 25 kilograms in one morning. There are still 45 kilograms in the box at this time. If there are 8 yuan apples per kilogram, how much can this basket of apples sell?

10, fruit shop shipped 18 baskets of apples, 25 kg each, 22 baskets of oranges, 20 kg each. How many kilograms of apples and oranges were shipped?

1 1. It takes 24 minutes to saw a steel pipe into four sections. It took 96 minutes at this speed. How many sections has the steel pipe been sawed into?

12, master and apprentice work on parts at the same time. 6 hours to complete the task, the apprentice will complete half of the total, 30 less. It is known that the master processes 35 pieces per hour. How many pieces do apprentices process per hour?

13, a building with 24 steps on each floor. Xiaohong walked up 96 steps from the first floor before going home. What floor does Xiaohong live on?

14, 30 floats lined up for National Day *. Each float is 4 meters long and the float spacing is 6 meters. How many meters is the captain of this float?