(45 minutes to complete the paper)
1, find the rule
( 1) 1,3,7, 13,2 1,( )。
(2) 2,8,5,6,8,4,( ),( )。
(3) ◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎◎967
2. What is simpler? Please write down the main process.
19999+ 1999+ 199+ 19 =
1000-8 1- 19-82- 18-83- 17-84- 16-85- 15=
3. February 19, 2008 is Tuesday, and March 5th is Sunday ().
4. In a division formula without remainder, the sum of dividend and divisor is 280, quotient is 6, dividend is () and divisor is ().
5. Xiaoming was careless when doing the problem. He wrote six mistakes in the minuend as 0 and four mistakes in the tenth as 8, so the calculated difference was 193, and the correct difference should be ().
6. In the formula () ÷ 7 = () ... (), the quotient and the remainder are equal, the maximum dividend can be (), and the minimum dividend can be ().
7. Put four squares with a circumference of 8 decimeters together to make a big square. The circumference of this big square is () decimeter.
8. The circumference of a rectangle is 56 cm, and the length is three times as wide, so the length is () cm and the width is () cm.
9. The distance between A and B is 450 kilometers, and the express train and the local train leave from both places at the same time. Three hours later, the two trains met at a distance of 12 km, and the express train was () km faster than the local train.
10, master and apprentice cooperated for 2 hours to produce 1 10 parts; If you work separately for 5 hours, the master will be 30 more than the apprentice. The master is required to make () parts per hour, and the apprentice makes () parts per hour.
1 1, warehouse A stores 58 tons of grain and warehouse B stores 70 tons of grain. In order to make warehouse A store three times as much grain as warehouse B, it is necessary to transport the grain out of warehouse B and put it into warehouse A. ..
12. Cut a wire with a length of 180m into three sections. The first section is 20m longer than the second section, and the third section is twice as long as the first section, so the third section is () m long.
13, the distance between Xiao Ming's home and school is 540 meters. Xiao Ming has to walk to school for 9 minutes, which is 3 minutes less than the last time he went to school, so Xiao Ming walks () meters per minute on average.
14, 250 people in two construction teams. Later, because of the need of work, 30 people were transferred from team A and 20 people were transferred from team B. At this time, the number of people left in the two engineering teams was the same. It turns out that team A () has someone and team B () has someone.
/kloc-All the students in Class 0/5 and Class 3 (1) took part in the school's spring sports meeting. Among them, four students participated in the gymnastics performance, more than half of the total number of students in the class. Just half of the remaining students participated in the track and field competition, the other seven participated in the skipping competition, and two provided logistics services. There are () students in Class Three (1) * *.
16, students from Dongfanghong Primary School donated money to the disaster area. The third grade students donated 236 yuan less than the fourth grade, and the fourth grade donated 3 times more than the third grade. 25 yuan; Donate () yuan in the third grade and () yuan in the fourth grade.
17. Pour water into an empty bottle with a cup. If you pour 2 glasses of water, the bottle weighs 490 grams; If you pour 5 glasses of water, the bottle will weigh 850 grams. A glass of water weighs () grams, and an empty bottle weighs () grams.
18. On a rectangular piece of paper with a length of 28 cm and a width of 15 cm, first cut out the largest square piece, then cut out the largest square piece from the remaining pieces of paper, and finally the circumference of the remaining rectangular piece is () cm.