Sharing resources I've been using to practice my UCMAS competition

I've been preparing for my upcoming UCMAS competition and wanted to share some of the resources that have helped improve my mental math speed and accuracy:

  1. UCMAS Practice Sheets iOS app – Great for daily speed drills, and to track your progress.
  2. [Flash Anzan Training]() – An online tool that rapidly displays numbers, helping with visualization and speed calculation.
  3. [Free Abacus Worksheet Generator]() – Generates unlimited worksheets for abacus and mental arithmetic practice.
  4. [Anzan Mega Arithmetic Program]() – A structured training program combining memory techniques and IQ exercises.
  5. [UCMAS Practice Worksheets]() – Official worksheets to sharpen UCMAS techniques.
  6. [Mental Calculation/Anzan Software]() – A software tool to practice Anzan by visualizing a soroban (abacus) in your head.
  7. Mental Anzan Training - Video Lesson – A useful demo video showing real-world Anzan training techniques.

Would love to hear if anyone else has good recommendations! What tools or techniques do you use for training?