1. 难度:中等 | |
计算:(![]() ![]() |
2. 难度:中等 | |
计算:![]() |
3. 难度:中等 | |
计算:![]() ![]() |
4. 难度:中等 | |
计算:|3.14-π|+3.14÷(![]() ![]() |
5. 难度:中等 | |
计算:|-2009|-(![]() ![]() |
6. 难度:中等 | |
求值:|![]() ![]() |
7. 难度:中等 | |
(1)计算:2cos60°-(2009-π)+![]() (2)解方程: ![]() |
8. 难度:中等 | |
(1)计算:(![]() ![]() (2)先化简再求值: ![]() ![]() |
9. 难度:中等 | |
(1)计算:-22-3×3-1+(![]() (2)解分式方程: ![]() |
10. 难度:中等 | |
计算:(![]() ![]() |
11. 难度:中等 | |
(1)计算:![]() (2)先化简,再求值. ![]() ![]() ![]() |
12. 难度:中等 | |
计算:2sin60°-3tan30°+(![]() |
13. 难度:中等 | |
(1)计算:![]() ![]() (2)解分式方程: ![]() |
14. 难度:中等 | |
计算:22+|-![]() |
15. 难度:中等 | |
计算:|-2|+2sin30°-(-![]() |
16. 难度:中等 | |
计算:![]() ![]() |
17. 难度:中等 | |
计算:(2+![]() ![]() ![]() ![]() |
18. 难度:中等 | |
计算:cos45°•(-![]() ![]() ![]() ![]() ![]() |
19. 难度:中等 | |
(1)计算:![]() ![]() ![]() (2)解方程: ![]() |
20. 难度:中等 | |
(1)计算:(-1)2008-(![]() ![]() (2)课堂上,李老师出了这样一道题,已知x=2008-5 ![]() ![]() |
21. 难度:中等 | |
计算:32-(2008-![]() |
22. 难度:中等 | |
计算:|-![]() ![]() |
23. 难度:中等 | |
计算:|-3|+2cos45°-![]() |
24. 难度:中等 | |
(1)计算:|3-![]() ![]() (2)解不等式组: ![]() |
25. 难度:中等 | |
计算:-22-![]() ![]() |
26. 难度:中等 | |
计算:(![]() ![]() ![]() |
27. 难度:中等 | |
(1)计算:|-2|+23-tan45°-![]() (2)解方程: ![]() |
28. 难度:中等 | |
计算:(-1)-2+2sin245°-(1-![]() |
29. 难度:中等 | |
计算:|-3|+![]() ![]() |
30. 难度:中等 | |
(1)计算:![]() (2)解方程: ![]() |