ACKNOWLEDGEMENTS
We would like to thank the following math contests:
The Mathcounts Competitions, the nation's premier middle school math enrichment, coaching, and competition program.
The AMC 8, a 25 question, 40 minute multiple choice examination in middle school mathematics designed to promote the development and enhancement of problem solving skills.
The AIME (American Invitational Mathematics Examination), an intermediate examination between the AMC 10 or AMC 12 and the USAMO.
The China Middle School Math Competition.
We would like to thank hundreds of families who participated in the 50 Mathcounts Lectures 2011 Summer Program. Without their support and trust, this program would not be possible. Thanks go to these parents and students who reviewed the draft of the lectures, made corrections to some errors, and provided excellent insights to some solutions.
We also have the solution books now.
ALL PDF FILES (3 volumes lecture books and 3 volumes of solution books)
$85.98
50 Mathcounts Lectures (Volume 1)
Table of Contents
2. Addition And Subtraction 15
3. Multiplication and Division 30
4. Parity 47
5. Operations with Fractions 62
6. Operations with Decimals 81
7. Operations with Percents 96
8. Pigeonhole Principle 112
9. Converting Fractions, Decimals, and Percents 125
11. Perimeter and Area 152
12. Counting Principles 177
13. Exponents 195
14. Radicals 205
15. Place Value and Scientific Notation 222
16. Absolute Values 234
17. Order of Operations 247
18. Simplifying Algebraic Expressions 256
Index 271
50 Mathcounts Lectures (Volume 2)19. Evaluating Algebraic Expressions 1
20. Divisibility 14
21. Solving Equations 32
22. Solving Inequalities 46
23. Venn diagrams 63
24. Combinatorics (Click here to see a sample) 83
25. Angles and triangles 104
26. Classification of triangles 115
27. Similar triangles 130
28. Pythagorean Theorem 147
29. Quadrilaterals 163
30. Trapezoids 177
31. Parallelograms 191
32. Angle bisectors and medians 205
33. Triangular inequality 218
34. Area Method 227
35. Polygons 241
36. Circles 262
Index 283
50 Mathcounts Lectures (Volume 3)
37. Factors 1
38. Prime Numbers 21
39. Least Common Multiples And Greatest Common Factors 39
40. Methods Of Factoring 57
41. Venn Diagram 2 74
42. Congruence 86
43. Last Digits 108
44. Remainder 119
45. Coordinate System 134
46. Lines And Equations 149
47. Systems Of Equations 174
48. Mean, Median, Mode, And Range 198
49. Volume 220
50. Probability 247
Index 279
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