I need 62 Olympiad math questions for Primary 4

1.There are four sticks, each with a root, and now take a few from one pile and put them in another pile to double the number of sticks in that pile. After moving 4 times, the number of 4 piles is the same, how should I move it?

In November, Intel Corporation invented the first computer chip with 2,250 transistors integrated into it. The company's founder, Gordon Moore, predicted that that number would double every 18 months.

By November 1986, Massale Viewpoint, "2250'That's a 10-fold increase. By November 1998, the "2250" had increased 18 times, (hint: in May 1997, Intel Corporation launched the "Pentium II" chip, the integration level is 5 million transistors) What is the integration level of the computer when it develops to this day?

3.1 It takes 20 hours and 16 hours for A and B to open two water pipes separately and fill a pool of water. If the pool is empty, open the two water pipes A and B at the same time, and after 5 hours, open the drainage pipe C, and ask how many hours it will take for the pool to be full?

4. A project, on the first day A does, the second day B does, the third day A does, the fourth day B does, so that it is done alternately, then it happens to be completed in whole days; If B does it on the first day, A on the second day, B on the third day, and A on the fourth day, and so on alternately, then the completion time will be half a day longer than the previous one. Given that it takes 17 days for B to complete the project alone, how many days does it take for A to complete the project alone?

5 Both the master and the apprentice made the same number of parts. When the master completed 1 2, the apprentice completed 120. When the master completed the task, the apprentice completed 4 5 How many parts are in this batch?

199911 199912 186575 ( 2. Find the pattern and fill in the number: 11,12,14,18,26 ( ).

1,2,2,4,8,32 ( )3, six consecutive natural numbers, the sum of the first three numbers is 60, then the sum of the last three numbers is ( )4, the sum of the three numbers of A, B, and C is 116, the number A is divided by the number B, and the number C is divided by the number A, which is quotient 2 and more than 1, then, the number B is ( ).

5. A store stipulates that you can exchange 3 empty soda bottles for a bottle of soda, Xiao Ming bought 8 bottles of soda, and after drinking it, he used the empty soda bottle to change the soda, and he could drink a total of ( ) bottles of soda. 6. There are ( ) triangles in the figure below. As shown in Fig

7. The dividend is 3320, the quotient is 150, the remainder is 20, and the divisor is ( )8. 5 8 + 16 4 2 = 209, 125 third-grade students of Guanghua Road Primary School participated in the entrance ceremony of the sports meeting, they were in a line of 5 people, the interval between each row before and after was 2 meters, the rostrum was 42 meters long, and they passed the rostrum at a speed of 45 meters per minute, which took ( ) minutes.

10. The existing pine trees and cypress trees are planted into a square array of 9 rows and 9 columns in the method of planting each other, and there are pine trees and cypress trees ( ) in this square. 11. The two grain depots A and B originally coexisted with 320 tons of rice, and later transported 40 tons from the grain depot A and transported 20 tons to the B depot. 12. There is a circular runway 690 meters long, A and B start from the starting point at the same time, A travels 60 meters per minute, B travels 55 meters per minute, ( A catches up with B for the first time after an hour.

13. A bridge is 2400 meters, and a train travels 900 meters per minute when passing through the bridge, and it takes 3 minutes from the front of the car to the end of the car to leave the bridge. The train is ( ) meters long.