Letโ€™s Abacus

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Letโ€™s Abacus We equip students to excel in math and LIKE math by teaching abacus-based mental math classes. Send us a message to schedule your free trial lesson today!

We offer in person classes in San Francisco and online classes for students from anywhere!

Congratulations to Maru, who participated in his first in-person Abacus competition last month at the IAC in Portland! H...
09/18/2026

Congratulations to Maru, who participated in his first in-person Abacus competition last month at the IAC in Portland! He has always been consistent with his homework, but since the contest, he has been inspired to practice even more to keep increasing his abacus skills ๐Ÿงฎ๐Ÿ’ช

๐Ÿ† First place Team Competition
๐Ÿ† Silver Oral Abacus
๐Ÿ† Pewter Comprehensive

Congratulations Maru! Keep it up!

Students are excited to try flash anzan for the first time in class ๐Ÿ˜Š๐Ÿงฎ๐Ÿง 
08/19/2026

Students are excited to try flash anzan for the first time in class ๐Ÿ˜Š๐Ÿงฎ๐Ÿง 

Congratulations to these four siblings who all showed up with their hard earned abacus skills at the International Abacu...
08/13/2026

Congratulations to these four siblings who all showed up with their hard earned abacus skills at the International Abacus Classic! ๐Ÿงฎ๐Ÿ˜Š This will be the last time all four compete together, as the oldest, Cory, is heading off to college. โค๏ธ Throwback picture is from 2019 ๐Ÿฅน

Dylan Wong
๐Ÿฅ‡ 1st place Oral Anzan
๐Ÿฅ‡ 1st place Team Competition
๐Ÿฅ‡ 2nd place Comprehensive
๐Ÿฅ‡ Bronze Oral Abacus

Emily Wong
๐Ÿฅ‡ 2nd place Comprehensive
๐Ÿฅ‡ Silver Oral Abacus
๐Ÿฅ‡ Bronze Oral Anzan

Jessica Wong
๐Ÿฅ‡ 5th place Comprehensive
๐Ÿฅ‡ Silver Oral Abacus
๐Ÿฅ‡ Silver Oral Anzan

Cory Wong
๐Ÿฅ‡ Graduating Senior Award - Gold
๐Ÿฅ‡ Silver Oral Abacus
๐Ÿฅ‡ Bronze Oral Anzan
๐Ÿฅ‡ Pewter Comprehensive

In Level 1 Anzan (1 Kyu mental calculation), students start doing bigger numbers in all three subjects. The time limit i...
08/13/2026

In Level 1 Anzan (1 Kyu mental calculation), students start doing bigger numbers in all three subjects. The time limit is 3 minutes, and students need to get 70% or higher in each subject to move on to Dan (Advanced degree)

Levels for Anzan start at 7 Kyu and go down to 1 Kyu. For Dan, it starts at 1 Dan and goes up.

Students with their pin badges for passing Dictation exams through the Abacutor App from earlier this year! Congratulati...
08/09/2026

Students with their pin badges for passing Dictation exams through the Abacutor App from earlier this year! Congratulations students!! ๐ŸŽ‰๐Ÿงฎ

IAC 2026 is in the books! Some highlights from Day 2! The students had a great time AND did a great job! Congratulations...
08/05/2026

IAC 2026 is in the books! Some highlights from Day 2! The students had a great time AND did a great job! Congratulations students!!

08/03/2026

๐ŸŽ‰๐ŸŽ‰ Congratulations to Dylan Wong who won first place (Gold) at the IAC in Portland, OR! He was able to calculate mentally six 5-7 digits numbers. He is able to see imaginary abacus beads in his head to come up with the correct number.

Dylan also won 2nd place overall in Comprehensive, Bronze in Oral Abacus, and 1st place in the team competition!

KEEP IT UP DYLAN WONG!! ๐Ÿ’ช

#ๆš—็ฎ—

Team Letโ€™s Abacus in Portland at the IAC on Day 1! I hope that you all do your best, gain inspiration, and have a great ...
08/02/2026

Team Letโ€™s Abacus in Portland at the IAC on Day 1! I hope that you all do your best, gain inspiration, and have a great time!

07/24/2026

Students are practicing for the upcoming IAC contest scheduled for next weekend in Portland. Good luck to all of the students! ๐Ÿ’ช๐Ÿงฎ๐Ÿฅ‡

Some of the Letโ€™s Abacus students with their medals from the Soroban League Online Contest held in May. It was a first o...
07/17/2026

Some of the Letโ€™s Abacus students with their medals from the Soroban League Online Contest held in May. It was a first of many of the students ๐Ÿ˜Š Congratulations students!

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San Francisco, CA

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+14153772589

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