Mathcounts - practice makes perfect.
Past problems folder pre-2021 problems
AOPS class folder https://drive.google.com/drive/folders/1xLVJfYpqKNvzveiYtZFaIqTbMqis4kyv?usp=sharing
MATHCOUNTS State Competition Preparation (All volumes). use this link in gdrive not the box links below
keyword extraction, keyword detection
correct and fast; know what to do, know what to look for, familiarity is important; no sketchy no shifty;
Previous materials below -
telescoping - fraction telescoping!
AOPS book volume 1: the basics volume 1 solutions
AOPS book volume 2 volume 2 solutions
2018 national and school solutions
1999 national sprint solutions
2011-2016 national sprint/target solutions 19 national 18 national 90 national 91 national 92national 2019 sprint 30: https://youtu.be/v-mfAS2IkM8 https://youtu.be/NGo8AM3TCKE 2018 sprint 28 https://youtu.be/0NFsL4z68Ww 2017 t8 https://youtu.be/_MkGAYonnCc 2016 s29
math camp type out - use word/windows paint?
AOPS class folder https://drive.google.com/drive/folders/1xLVJfYpqKNvzveiYtZFaIqTbMqis4kyv?usp=sharing
MATHCOUNTS State Competition Preparation (All volumes). use this link in gdrive not the box links below
Chapter 1 All about number bases 1
Chapter 2 Counting – Row permutations 23
Chapter 3 Last digits and remainders 56
Chapter 4 Counting- Combinations 81
Chapter 5 Number separations 119
Chapter 6 Counting – Balls and boxes 152
volume 2 on page 188;
Chapter 7 Denesting Radicals 1
Chapter 8 Number of Ways to Walk 20
p226 counting path - using critical points
Chapter 9 Triangle Inequality Theorem 56
Chapter 10 Geometry – Similar Triangles 78
Chapter 11 Geometry - Circles 122
Chapter 12 Newton’s Little Formula 163 (p173 is not in state mathcounts!?)
volume 3 on page 390;
Chapter 13 1Algebraic Manipulation 1
Chapter 14 Consecutive Integers 35
Chapter 16 Pythagorean Theorem 100
Chapter 17 Vieta’s Theorem 134
Chapter 18 Diophantine Equations 170
vol 4 page 601
Chapter 19 Factoring Methods 1
Chapter 21 Equations and Expressions 79
Chapter 22 Area and Area Method 116
Chapter 23 Digits Problems 156
vol 5 page 800
Chapter 24 The Mass Points Method 1
Chapter 28 Coordinate Systems 156
be strategically lazy!
pay special attention to what's being asked - know your target - re-read the problem to make sure what's being asked before writing down the answer; read the question carefully and fully understand it first
https://artofproblemsolving.com/videos/mathcounts/mc2017/480 2017 s23
look at the problem and just go through strategy; strategize, methodology first, 看题讲方法
no calculator unless needed
leave sqrt in place when dealing with pythagorean
don't misplace answers - keep it to the right question; no misplaced answer
yongchengchen mathcounts videos on area and area techniques -
https://iu.box.com/s/aikqj54g6by7zhnrv9am587ti836g83s
https://iu.box.com/s/lwdu6witf2im85eb85aur6tcg67x2dhy
https://iu.box.com/s/5yt6vag2u2xwab0g0semefecme0viyj7
https://iu.box.com/s/orkrznlo8tte9p403wjqqdysmup3r060 longest
flower of life drawing -
https://www.bibliotecapleyades.net/geometria_sagrada/esp_geometria_sagrada_6.htm
http://www.sacred-geometry.es/?q=en/content/flower-life
don't over think - keep it simple, cut the crap
alternating between videos, 90-99 target/sprints and mistake problems;
91t8 wrong railroad trestle; all targets done; set A and B problems - easy and hard
tikz draw flipping triangle's picture - shaded middle triangle, series
1/29/20 95-96 target done; 1/30/20 94-95 target done; 93-94 target done; going backwards to 93 target 2 misunderstanding; 92 91; 90 done
there are 20 5's in 1-100, 55 contributes two 5! complementary counting doesn't work and leads to wrong result!
1/29/2020 on #45, current set of mistake problems need to work on again - repeat practicing
most recent https://github.iu.edu/haiyang/math/blob/master/mathcounts-2020/a1.pdf
old https://github.iu.edu/haiyang/haiyang-scratch/blob/master/math/second.pdf
1/29/20 95-96 target going backwards to 94 93 92 91; 90 done
90-93 https://iu.box.com/s/a32k85zeyyqtinb0e5eo8ytg7c4i4jmi
94-98 https://iu.box.com/s/wv52i69vyozcnnct7rqv228aswdfy5hk and https://iu.box.com/s/0pouxfoaf7pasiksaqj2ueibx06jlzxp
99-03 https://iu.box.com/s/3s2xtjw5r0tlqkkrnvuexcbi3rar1ei4
solutions. https://iu.box.com/s/p3xfqfiq06el46r8c26b8fkgpic6cps0
refer to past mistakes page for which questions to do-
https://sites.google.com/site/mathcounts2020/mistakes-history
1/28/20 did 96-97 state target;
priority list -
target and sprint rounds from 1990 to 1999
past mistakes from real mathcount state problems
2019 handbook has 250 problems, did 27 so far 1/22/20
team round problems 2019 backwards to 1989
national problems 2017 backwards to 1990
NOT WORTH IT - AOPS mock mathcounts https://artofproblemsolving.com/wiki/index.php/Mock_MathCounts#Past_Mock_MATHCOUNTS; did 2017 sprint and target and 2016 sprint
focus on sprint 20-30, target 5-8; practice, practice, practice
Online Training Resources:
current set of mistake problems need to work on again - repeat practicing
https://github.iu.edu/haiyang/haiyang-scratch/blob/master/math/second.pdf
MATHCOUNTS DRILLS by Elias Saab missing Number theory!
Mathcounts things to know https://iu.box.com/s/69zrdv824k70ibcw78iaqwmtmy12tuc4
https://iu.box.com/v/mathcounts-mini
http://mathteamnyc.weebly.com/mathcounts.html
https://artofproblemsolving.com/wiki/index.php/AMC_10_Problems_and_Solutions
http://nonagon.org/ExLibris/chinese-remainder-theorem-calculator
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