美國初中數學 競賽（ MATHCOUNTS ） 每周一 練總結
美國初中數學 競賽（ MATHCOUNTS ） 每周一 練從去年九月開始，現在結束了。貼了二十五周。都是 PDF 文件的格式，容易下 載和打印。每周算四十題，也有一千題了。這裏的每一道題（除了模擬的題外），都在實際競賽中用過，都是真題。這些題每一道都有答案。把這些材總結一下，供後麵的人用。
MATHCOUNTS 競賽有題型，有規律可尋，考的大都是常用的數學知識，但也有些非常見的。這些練習，並沒有囊括所有的題型，隻是提供一個開始。要想有更大的進取，還須自己努力。
如果您注冊了，在您的用戶名下，能看見＂ Math Coach ＂ 這字，就能看見所有的文件。如果您不能看見那些 PDF 的文件， 請發郵件到 yongcheng3315@gmail.com. 我就 給您“授銜”。 GOOD LUCK ！
Mathcounts Weekly practices
Week 0 problems (operations with fractions) and answer keys
Mathcounts Weekly Practice ---Week 1 Operations with decimals
Mathcounts Weekly Practice ---Week 4 Exponents and radicals
Mathcounts Weekly Practice ---Week 5 Order of operations
Mathcounts Weekly Practice ---Week 6 Geometry (1)
Mathcounts Weekly Practice ---Week 7 Geometry (2)
Mathcounts Weekly Practice ---Week 8 Solving equations
Mathcounts Weekly Practice ---Week 9 Solving Inequities
Mathcounts Weekly Practice ---Week 10 Geometry (Circles)
Mathcounts Weekly Practice ---Week 11 Coordinate Geometry
Mathcounts Weekly Practice ---Week 12 Polygons
Mathcounts Weekly Practice ---Week 13 Counting Principles
Mathcounts Weekly Practice ---Week 14 Combinations and permutations
Mathcounts Weekly Practice ---Week 15 Divisibility
Mathcounts Weekly Practice ---Week 16 (Mock Mathcounts 2011001)
Mathcounts Weekly Practice ---Week 17 LCM/GCM
Mathcounts Weekly Practice ---Week 18 Counting systems (bases)
Mathcounts Week 19 (Mock Mathcounts 2011002)
Mathcounts Week 20 (Mock Contest 2011003)
Mathcounts Week 21 (Mock Mathcounts Chapter Test 2011004)
Mathcounts Week 22 (Mock Mathcounts Chapter Test 2011005)
Mathcounts Weekl 23 Practice Problems (Mock Chapter 2011006)
Mathcounts Weekl 24 Word problems from Mathcounts
Mathcounts Weekl 25 Some countdown PowerPoint files
