LR Abacus Practice Test - a free, simple practice tool I built for my son to sharpen his abacus speed and accuracy, one test at a time.
“Focus on one column at a time - mastery is built row by row.”
Built to help kids build speed and accuracy, one test at a time - completely free.
Pick 25, 50, or 100 questions - short warm-ups or full-length exams.
Untimed practice to learn, or a timed exam to test yourself for real.
Addition & subtraction, multiplication, and division - all in one place.
See exactly which questions were right, wrong, or skipped - right after submitting.
Watch your score and speed improve over time, test after test.
Earn badges for milestones - your first perfect score, 10 tests, 100 tests, and more.
Unlock a personalized certificate to celebrate every milestone.
Jump straight into a test as a guest, or register to save your progress.
Pick an operation, a digit size, a length, and practice or exam mode.
Answer at your own pace in practice mode, or beat the timer in exam mode.
See your score instantly, track your progress, and earn badges.
Every practice test brings you closer to your next badge.
Perfect Mind
Lightning Mind
Number Ninja
Practice Warrior
Abacus Expert
Abacus Champion
Abacus Legend
7-Day Streak
First Breakthrough
New Personal Best
Addition Ace
Subtraction Star
Multiplication Master
Division Pro
I built this site just for my son's abacus practice - not as a business. It's my first application built using Claude Code, and it's free for anyone to use, always will be, no strings attached.
It takes ten seconds to start - always free, no card, no commitment, just beads and numbers.