Hello everyone! I am looking forward to know what you guys think the fastest method for the following is (along with your personal best timings).

**Addition**

2 vs 2

3 vs 3

**Subtraction**

2 vs 2

3 vs 3

**Multiplication (Direct only)**

2 vs 2

3 vs 3

**Division (upto 2 decimal units)**

2 vs 2

3 vs 3

**Square Roots (Direct only)**

2 digit numbers

3 digit numbers

4 digit numbers

**Squares (Direct only)**

2 digit numbers

3 digit numbers

The reason I am asking you this is to know what methods work the best individually for these systems. I have already practised quite a bit of these (for example, the Tratchenberg system except direct multiplication). Sorry for my poor English.

Additionally, I have never practised the Soroban, and hence I am eagerly looking forward to replies from Soroban maestros as well.