Mathematical simulation question and answer 1. Fill in the blanks. (2 points for each small question, ***22 points)
1, 264908085 is pronounced as (). The number in ten thousand is written as (), and it is omitted to one hundred million digits as ().
2,0.34 has () 0.0 1.
3, 1: 45 = () points. 2.08 km = () meters
5.6 tons = () tons () kg
4. Fill in the appropriate units.
The area of the blackboard in the classroom is about 2 square meters.
The volume of a Chevy bottle is 250 (),
A bag of salt weighs 500 pounds.
The runway of the school playground is 400 ()
5. 0.48, 1, 1.6 and 0.4 in descending order:
()& lt()& lt()& lt()
6. A line can just enclose a square with a side length of 12 cm. If a rectangle with a side length of 16 cm is enclosed, its width should be () cm.
7. On the plan, the distance of 3 kilometers on the ground is represented by the distance of 10 cm, and the scale used is ().
8. Cut the 5m-long steel pipe into 4 sections on average, each section is full length (); If a 5-meter-long steel pipe is cut into two sections according to the ratio of 2:3, the shorter section is () meters long.
9. Both A and B are natural numbers (both are not zero), and the quotient of A divided by B is 5, so the greatest common divisor of A and B is (), and the least common multiple of A and B is ().
10, the prime factor of decomposition 72 is ().
The meaning of placement test is 1. Through the junior high school entrance examination, students can develop this sense of competition, and students in key classes will always maintain a sense of crisis to avoid being brushed off by students in ordinary classes. Students in ordinary classes will keep self-motivated and want to rush into key classes and enjoy better educational resources.
Of course, there are advantages and disadvantages. Compulsory education should be fair and just, but now it is divided into classes, which leads to the investment of excellent teachers' resources and conditions in key classes and ignores the education of ordinary classes.
3. Nowadays, schools are very concerned about the performance of enrollment rate, thus forgetting the original intention of teaching and educating people, and putting the best teachers and equipment into key classes, which is irresponsible to students in ordinary classes. This practice also violates the fair distribution of educational resources.
4. After the placement test, some students may suffer a great blow to their self-confidence because they are assigned to ordinary classes, which may easily lead to psychological and emotional collapse.