20 10 simulation training of experimental class in junior high school
Sixth grade real problem simulation -2
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First, the calculation problem (this problem contains 1 item, each item has 6 points, and ***6 points. )
1.=( )。
Fill in the blanks (this question contains 1 1 small questions, each with 6 points and ***66 points. )
2. Use a stick with a length of 10 cm to cut 25 small sticks with a length of 4 cm, 3 cm and 2 cm, at least 10 cm is needed.
There is a pile of candy, which is distributed to the children in the kindergarten class. If each child is divided into 23 pieces, there will be 16 pieces left; If each person is divided into 26 capsules, and there are still 8 capsules missing, then each person is divided into () capsules, just enough to finish eating.
4.a work can be completed in 8 hours and 30 days per day, and B work can be completed in 22 days per day 10 hour. Party A takes a day off every six days and Party B takes a day off every five days. Now the two teams work together for eight hours every day. /kloc-After 0/3 days (including rest days), Party A will work alone for six hours every day, and it will take () days to complete the work.
5. given a > b > c > d > 0, then this formula is (). (Fill in "correct", "wrong" or "not necessarily correct")
6. Party A, Party B and Party C play table tennis. It is stipulated that the two of them play a game, and the loser makes way for the third person. If Party A plays 12 games, Party B plays 9 games, and Party C plays () games at most.
7. Add two cycle points to the decimal 0.6 194203875 to make it a cycle decimal. It is known that the number at100th after the decimal point is 7. This cyclic decimal is ().
8.2008 has () different divisors.
9. We agreed: =-ad-bc = ().
10. The product of an integer a and 1080 is a complete square number, so the minimum value of a is (), and this square number is ().
1 1. There are 340 grams of pure alcohol in container A and 400 grams of water in container B. Pour part of pure alcohol in container A into container B for the first time to mix alcohol with water. Pour part of the mixed liquid in container B into container A for the second time. At this time, the pure alcohol content in container A is 70%, and that in container B is 20%. Then the mixed liquid poured from container B into container A for the second time is () grams.
12. Party A, Party B and Party C are separated by 300m in turn (as shown in the figure), and Party A, Party B and Party C walk in turn every minute100m, 90m and 75m. If Party A, Party B and Party C start at the same time, the distance between Party A, Party B and Party C will be equal for the first time after () minutes.
Third, the answer (this question contains 4 small questions, each 12 points ***48 points. )
13. A school selected some students to participate in the composition competition, among which there were more boys than girls 10. As a result, 50% of the girls won the prize and 30% of the boys won the prize. The total number of winners is 27. How many students are taking part in the competition?
14. A canal with a length of170m was jointly built by two engineering teams. It is known that Team A has repaired 10 meters more than Team B. How many meters has Team B repaired less than Team A? (Mathematics Competition for Primary School Students in Huanggang City, Hubei Province)
15. There are 4 girls and 2 boys in a study group. In an exam, the number of questions they answered correctly varied, ranging from up to 65,438+00 questions to at least 4 questions. The girl who did the best job had four more questions than the boy who did the worst job, and the boy who did the best job had four more questions than the girl who did the worst job. How many questions does the boy who did the right thing have?
16.ABCD is a right-angled trapezoid as shown in the following figure, where AD= 15㎝, AB= 12㎝, BC= 18㎝, S△AED=S quadrilateral ebfd = s △