第一章解题思想.............................................................................................................................1
一、代入排除法.......................................................................................................................1
课前自测...........................................................................................................................1
例题精讲...........................................................................................................................1
参考答案...........................................................................................................................2
随堂练习...........................................................................................................................2
二、数字特性思想...................................................................................................................3
课前自测...........................................................................................................................4
例题精讲...........................................................................................................................5
参考答案...........................................................................................................................7
随堂练习...........................................................................................................................7
三、方程思想...........................................................................................................................8
课前自测...........................................................................................................................8
例题精讲...........................................................................................................................9
参考答案...........................................................................................................................9
随堂练习.........................................................................................................................10
四、赋值思想.........................................................................................................................11
课前自测.........................................................................................................................11
例题精讲.........................................................................................................................11
参考答案.........................................................................................................................12
随堂练习.........................................................................................................................12
第二章基础计算...........................................................................................................................15
课前自测.................................................................................................................................15
例题精讲.................................................................................................................................16
参考答案.................................................................................................................................16
随堂练习.................................................................................................................................17
第三章数列与平均数...................................................................................................................19
课前自测.................................................................................................................................19
参考答案.................................................................................................................................20
随堂练习.................................................................................................................................20
第四章工程问题...........................................................................................................................23
课前自测.................................................................................................................................23
例题精讲.................................................................................................................................23
参考答案.................................................................................................................................24
随堂练习.................................................................................................................................24
第五章行程问题...........................................................................................................................27
课前自测.................................................................................................................................27
例题精讲.................................................................................................................................28
参考答案.................................................................................................................................30
随堂练习.................................................................................................................................30
第六章经济利润问题...................................................................................................................33
课前自测.................................................................................................................................33
例题精讲.................................................................................................................................34
参考答案.................................................................................................................................35
随堂练习.................................................................................................................................35
第七章容斥原理...........................................................................................................................37
课前自测.................................................................................................................................37
例题精讲.................................................................................................................................37
参考答案.................................................................................................................................38
随堂练习.................................................................................................................................39
第八章排列组合与概率...............................................................................................................41
课前自测.................................................................................................................................41
例题精讲.................................................................................................................................41
参考答案.................................................................................................................................42
随堂练习.................................................................................................................................43
第九章构造问题...........................................................................................................................45
例题精讲.................................................................................................................................45
参考答案.................................................................................................................................47
随堂练习.................................................................................................................................47
第十章几何问题...........................................................................................................................49
课前自测.................................................................................................................................49
例题精讲.................................................................................................................................50
参考答案.................................................................................................................................52
随堂练习.................................................................................................................................52
