# 3x3 multiplication PRs

Slow but still a personal record I am pretty happy with it.

3 Likes

Just beat it

Only one minute later
Update: Got close

1 Like
2 Likes

Nice!

Why dont you try 8 digits X 8 digits?

1 Like

I probably should get back to that. I havenâ€™t trained for the past few months and am just getting back into it.

Just curious to see. You seems fast.

Really? I didnâ€™t think it was very fast after seeing what the 8x8 records were

Well, they are records for one reason

1 Like

Very nice!
I recommend you could prioritize doing more task.

And donâ€™t forget divisionsâ€¦. It would be quite hard to redeem it later(my personal experience)

2 Likes

I donâ€™t have a technique for it. Do you have a method that I can use besides abacus?

Maybe try cross method? Maybe @Daniel_360 could offer some help.

I personally use the vertical method, though very few people use it for mental calculation, I think itâ€™s quite nice

What is the vertical method? Can you please explain it?

Hmmâ€¦My English is quite bad, I donâ€™t think I can explain it wellâ€¦

Itâ€™s something like this, itâ€™s fairly simple. Also there are many resources on the Internet.

If you have any practical issue while using it, I will try my best to elaborate.

1 Like

Anyway exellent! How long have you been training abacus?

1 Like

Umm, Iâ€™m not sure if I understand it correctly or not, maybe he means that he already hear about soroban but he donâ€™t wanna use it

1 Like

Niceâ€”itâ€™s good to see your progress!

Note that 1-question PRs are often a result of occasionally getting an easy question, like 101 Ă— 543. Since youâ€™re already fast, see how many you can solve correctly in the 2-minute time limit!

The method I got tagged to share is cross-multiplication, which will help you for larger sums if you arenâ€™t already using it.

3 Likes

LOL, I have never been mastered such MIP 8x8, even 3x3 I feel hard.
I can handle 2x2 pretty well now with reference number 10,20,30,â€¦,100.
Since, grade 10 I seldom use mental calculation, bc we are allowed to use calculators in exam.

2 Likes

I have been doing mental math for 1 month in total I took a 3 month break and started again yesterday

I have tried the full 2 min but only managed 3 before time was up. I think I will continue training speed until I am cosistently sub 12.
Anyway new PR.