# Fast Math - Multiplication

This quiz changes every time you play!
Quiz by Quizmaster
Rate:
Last updated: September 3, 2018
 First submitted December 22, 2012 Times taken 668,184 Average score 75.0% Rating 4.72
2:30
0
/ 20 guessed
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Keep scrolling down for answers and more stats ...
 Problem Solution - x - x - x - x - x
 Problem Solution - x - x - x - x - x
 Problem Solution - x - x - x - x - x
 Problem Solution - x - x - x - x - x
+11
Level 78
Oct 24, 2010
Love this!
+7
Level 33
Oct 26, 2020
impossible
+20
Level 66
Dec 12, 2020
One trick is to round up or down to an easier calculation, and then subtract or add the difference. For example, I got 98 x 6. 100 X 6 is easier, so I did that first. Because I had gone up two to get to 100, I did 6 x 2, and subtracted 12 from 600.

Of course, you could always just do 90 x 6 plus 8 x 6.

+1
Level 25
Apr 30, 2022
49 seconds left
+12
Level 30
Mar 17, 2011
100% with 1:01 to go
+3
Level 31
Dec 12, 2020
hah! 100% with 1:02 to go!
+1
Level 16
May 14, 2021
1:05 remaining = )
+11
Level 61
May 4, 2011
love this one, it really tests you unless you use a calculator obviously! 20/20
+11
Level 62
Oct 4, 2019
Why would you use a calculator?
+7
Level 53
Nov 10, 2020
to get points and the badge, obviusly.
+7
Level 67
Dec 12, 2020
If you are good at this, doing it in your head is way faster than having to type on a calculator first, and then transferring the result.
+1
Level 56
Sep 8, 2021
Yup
+6
Level 30
Jun 24, 2011
100 with 17 secs left

We should do it better

+5
Level 18
Dec 25, 2014
Ehh, managed to do all of them with 8 seconds to spare. Not too bad for a 13 year old
+95
Level 69
Nov 21, 2018
ehh managed to get them all with 30 minutes left, not too bad for someone 3 months after concepcion
+2
Level 51
Apr 16, 2020
ehh managed to get them all with 2 minutes 30 seconds left, not too bad for someone the night after conception
+18
Level 58
Apr 20, 2020
^ ruined it.
+1
Level 66
Dec 12, 2020
Especially since the time did not increase but decrease.
+4
Level 31
Aug 20, 2011
Got 17 in my head before running out of time - not bad for a first try.
+1
Level 57
Aug 26, 2011
15/20 quite pleased with that effort after a long day at work and being nearly ready for bed!
+2
Level 44
Oct 27, 2011
Got 12 doing it in my head, I work better with words than numbers
+1
Level 29
May 27, 2019
27secs remaining, did it in my head
+1
Level 60
Dec 10, 2019
1 mins+ remaining. Did it in my head.
+1
Level 31
Dec 12, 2020
same
+4
Level 66
Dec 12, 2020
I work better with words than numbers

Do you mean it is easier for you to calculate forty-five times thirteen than to calculate 45 x 13? jk

+1
Level 23
Jun 30, 2012
got all with 9 seconds to spare
+1
Level 34
Oct 13, 2012
Wow... the different times I take it are like a test to my alertness. I've gotten 20/20 several times now, but this morning, I only got 15...
+1
Level 44
Nov 25, 2012
Yeah - I'd like to see more of these... good mental exercise!
+1
Level 47
Dec 22, 2012
where are the stats for this quiz? seems strange a quiz on numbers without the stats.
+8
Level ∞
Dec 22, 2012
How can there be stats? The questions change every time.
+1
Level 57
Dec 22, 2012
Have to use all those shortcuts that they would never teach you in elementary school.
+1
Level 23
Dec 23, 2012
Wish I had a calculator.... Or was a human calculator. Got 16/20 XD!
+2
Level 59
Mar 22, 2013
20/20 with 1:28
+1
Level 29
Jul 19, 2020
20/20 with 1:48 remaining!
+1
Level 44
Apr 12, 2013
this simple multiplication is made easier by taking an indirect route to the answers that arent obvious. for example, I take 48 x 4 and see it as 50 x 4 (which i automatically know is 200) minus 2 x 4 (8) and get the answer 192 in two seconds. But if I multiply 4 by 40 and then 4 by 8 and add them together it takes 2 or 3 times as long.
+2
Level 47
May 30, 2013
Weird, I like splitting the tens and ones columns, multiplying those, and adding them back together. Your method would take longer for me. Different minds!
+1
Level 28
May 19, 2015
Yeah, just have to use those basic shortcuts that make mental maths so much easier
+1
Level 66
Aug 7, 2015
Yeah, I do that too.
+1
Level 56
Sep 8, 2021
Or you could just do 48×4. Works for me with 20/20 and 1:12 left on the clock
+1
Level 16
Apr 24, 2013
First try - 100%
+1
Level 43
Jul 28, 2013
Nailed it!! 100 % First try and 1:52 to spare. Yeah !!!
+1
Level 34
Oct 4, 2013
100% with 1:37 left.
+1
Level 38
Nov 10, 2013
Yes! Did it with 9 seconds left
+1
Level 73
Dec 2, 2013
All with :19 to go. (BTW, is there any other way to do this than in your head? Calculators sort of miss the point don't they?)
+4
Level 65
Nov 6, 2015
by hand....
+1
Level 43
Dec 17, 2013
100% With 2:10 left. Sweet!!!!
+2
Level 24
Feb 22, 2014
100% and I am in grade 4 and I know law of cosines and sines
+1
Level 77
Aug 7, 2015
Good for you. When I was in 4th grade in the early 1960s we were just learning to do long division.
+9
Level 65
Mar 23, 2016
/r/iamverysmart
+2
Level 46
Aug 21, 2018
clearly sarcasm
+1
Level 18
Mar 30, 2014
20/20 with 20 seconds left ! Wow

Who gets better?

+1
Level 73
Apr 1, 2014
20/20 with 56 left
+1
Level 61
Apr 23, 2016
20/20 with 0:57 left
+1
Level 27
Apr 29, 2016
20/20 with 1:11 left :-)
+1
Level 56
Sep 8, 2021
20/20 with 1:12 left
+1
Level 20
Jan 27, 2019
20/20 with 1:35
+1
Level 8
Apr 2, 2014
100% 1:12 left :)
+1
Level 76
Apr 30, 2014
It almost ruined my mental math skills when they allowed calculators in my high school classes! Still I got 18/20. Great quiz, by the way!
+1
Level 76
Dec 12, 2020
40 seconds left now. Seems I have recovered.
+1
Level 36
Apr 30, 2014
Like this, 100% with 45 to go.
+1
Level 55
Apr 30, 2014
Never been much good at maths :(
+1
Level 11
May 12, 2014
1:37 full marks! Still in school though
+1
Level 65
Aug 2, 2014
20/20 with 44 seconds left...not bad for a fifty-year-old who has been out of school for almost 30 years.
+1
Level 86
Aug 5, 2014
1:46 left
+1
Level 43
Aug 23, 2014
20/20, first try, with 0:41 left. Very fun!
+1
Level 63
Sep 2, 2014
with 70 seconds to spare
+1
Level 40
Sep 29, 2014
did all orally 1:07 remaining
+1
Level 18
Oct 29, 2014
36 secs left!
+1
Level 81
Nov 13, 2014
16/20 on this try. I guess it depends a bit on how many easy ones you get too. The ones I didn't have time for were: 24x18, 14x23, 33x17 and 71x8. Yes, the last one of those would've been easy, but didnt spot it when doing others.
+1
Level 56
Sep 8, 2021
that's sillie
+1
Level 16
Nov 16, 2014
Only got 17/20 first try
+1
Level 15
Nov 21, 2014
First try 26 seconds left, 100%
+1
Level 26
Nov 30, 2014
20/20 with 1:29 left. U should be able to work these out quickly.
+1
Level 26
Nov 30, 2014
Btw this was 1st try
+1
Level 81
Nov 1, 2016
+1
Level 55
Nov 24, 2016
hahahaha
+1
Level 50
Dec 1, 2016
im so good i was finished before i even begun.......
+1
Level 18
Dec 10, 2014
20/20 1 minute 59 first try blindfolded!

Na, just 18/20 xD still first time tough...

+1
Level 65
Dec 25, 2014
Got 100% with 36 seconds to spare, 34*17 got me for like 45 seconds though
+1
Level 29
Jan 10, 2015
+1
Level 29
Jan 10, 2015
And I'm 11
+2
Level 79
Apr 5, 2015
Geez kid, you want a medal?
+1
Level 77
Aug 7, 2015
I think it's great, s14103. I'd give you my math medal if I'd ever been bright enough in math to earn one.
+1
Level 23
Feb 1, 2015
50 seconds left, don't do this when you're tired, it hurts your brain.
+1
Level 77
Aug 7, 2015
So agree.
+1
Level 18
Feb 24, 2015
Finished 100% first try in 30 seconds
+1
Level 65
Mar 9, 2015
completed with 40 seconds left
+1
Level 57
Apr 27, 2015
Got all with 1:38 remaining, sounds good
+2
Level 15
May 10, 2015
Ok if anyone has trouble doing these, I have a way.

Ok say your problem is 92x4. I would take

the first ten and the last one. ( so basically the distributive property,

Ex - 90x4 ( 360 ). Then add the ones. ( 2x4 ) your answer is 368

+1
Level 8
Jun 1, 2015
With 2:10 left
+1
Level 8
Jun 1, 2015
And 2:22
+1
Level 36
Jun 22, 2015
100% with 17 seconds remaining, get really panicky at the last 30 seconds though
+1
Level 44
Aug 26, 2015
20/20 with 2:14 left on the clock ... Firts Try!! (Y)
+1
Level 63
Sep 15, 2015
20/20 with 70 secs left
+1
Level 26
Sep 25, 2015
20/20 with 1minute 17seconds remaining.
+1
Level 11
Oct 13, 2015
im not im doing perfectly well
+1
Level 68
Oct 17, 2015
4 seconds left on first try!!!!!!
+1
Level 60
Sep 10, 2017
14 numbers per second ?
+1
Level 23
Oct 27, 2015
yay 1:45 left
+1
Level 51
Oct 29, 2015
Just achieved personal best. Completed with 1:57 left.
+1
Level 20
Nov 8, 2015
First time, 32 seconds left and I'm 11
+1
Level 20
Oct 22, 2017
First time, 1:57 left and I'm 9
+1
Level 44
Nov 8, 2017
First time, 1:30 and I’m a calculator
+1
Level 66
Nov 21, 2017
First time, 1:58 left and I'm 4 months old.
+1
Level 33
Nov 10, 2017
First time, 2:00 left and I’m 5
+1
Level 60
Nov 11, 2017
0.9th try, 87 hours left and i'm -3
+1
Level 63
Nov 15, 2015
My kid just turned 1, so I guess I'd better start practising for homework help now...
+2
Level 61
Jan 2, 2016
20/20 with 34 secs remaining!
+1
Level 29
Feb 11, 2016
Anything times 11 is really simple, just separate the two numbers and add them up in the middle! Like 45 *11= 4 (4+5 =)9 and 5
+2
Level 43
Mar 13, 2017
You could multiply by 10 and then add another one. For example:

45*11=45*10+45*1=450+45=495

+1
Level 23
Mar 16, 2016
20/20 and with a minute left, can anybody beat me?
+2
Level 81
Apr 21, 2016
40/20, a whole hour left and I'm only a zygote.
+1
Level 70
Apr 26, 2016
1:57
+1
Level 27
Apr 29, 2016
1:11 left
+1
Level 13
May 3, 2016
20/20 with 1:02 left.
+1
Level 67
May 6, 2016
I may be 50 but the mental arithmetic, BOOM!
+1
Level 60
May 31, 2016
got them all with 82 seconds left without a calculator and bad a typing fast
+1
Level 68
Jun 10, 2016
How old are you?
+1
Level 29
Jun 14, 2016
20/20 1.19 left (and of course no calculator)
+1
Level 63
Jul 2, 2016
2:50 left with eyes closed
+1
Level 25
Jul 10, 2016
I was thinking of making a nerdy, big-headed remark and decided not to...

We need more people like that.

:smirk:

+1
Level 55
Jul 12, 2016
1:35 remaining :)
+1
Level 42
Aug 20, 2016
14 yrs old, all 20 correct, 2 mins 4 secs left ('-.-')
+1
Level 30
Sep 21, 2016
19/20 first try couldnt get 73x6
+1
Level 22
Nov 21, 2016
15/20. I think this is possible, but its hard af
+1
Level 51
Nov 21, 2016
100% :48 left but hard to feel good when some of them were "10*49"
+1
Level 67
Nov 23, 2016
to be fair, there should be no 2nd tries on this one!
+1
Level 90
Nov 23, 2016
20/20 first try. 1:35 left to spare.
+1
Level 55
Nov 24, 2016
nerd
+1
Level 90
Jan 21, 2018
If thats your way to recognize me for doing in 1 month, the same quantity of points that you have done in like 2 years, your comment is really welcome.
+1
Level 66
Dec 1, 2016
I'd love a cookie. Preferably Sainsburys taste the difference.
+1
Level 66
Dec 1, 2016
Why can't we upvote comments on here like reddit and imgur??!
+3
Level 67
Dec 1, 2016
20/20, 2:00 left, first try, all mental, while doing a New York Times crossword and driving a car. Just popped out of the womb last week.
+1
Level 67
Dec 2, 2016
Looks like we've got a lot of people coming in at around a minute and getting all 20. To me, that sounds like you could lop a minute off the time and still have a fun quiz, but with some time crunch.
+1
Level 27
Dec 5, 2016
Is it cheating if I also had to use paper and pen for the difficult ones??
+1
Level 63
Dec 16, 2016
Got 100% with 3 minutes and 71 seconds left
+1
Level 12
Dec 16, 2016
You serious I can't to that
+1
Level 12
Dec 16, 2016
It's so hard these mental maths give my brain a headache but anyway I got 11/20 on my first go!
+1
Level 43
Dec 25, 2016
30/30 with 8 seconds left. Did it all in my head, blind folded, hands tied behind my back and I am only 18 months old
+1
Level 41
Mar 5, 2017
Same here, but i did it with out a computer
+1
Level 71
Mar 15, 2020
20 / 20 I can believe, but 30 ...... no sorry.
+1
Level 44
Jan 29, 2017
How does it change every time?
+1
Level 45
Mar 8, 2017
Finished all of them with 2:29 left and I'm only 4 years old and have been diagnosed with severe, crippling autism. I'm also a small Indian child in Mumbai with no internet connection.
+1
Level 24
Mar 10, 2017
finished with a minute
+1
Level 25
Mar 16, 2017
Completed with 47 seconds to go
+1
Level 30
Mar 24, 2017
23 to go
+1
Level 82
Apr 6, 2017
And with that, I'm the 2000th person to earn the Math Wizard badge.
+1
Level 54
Apr 24, 2017
Woo Hoo, just got my math badge!
+1
Level 35
May 22, 2017
Very easy if you do it right. For example, for 18 x 25, do 10 x 25 + 8 x 25 = 450. Or for 52 x 8, do 50 x 8 + 2 x 8 = 416
+1
Level 23
May 24, 2017
51 seconds left!
+1
Level 28
May 26, 2017
1:18 left!!
+1
Level 70
May 28, 2017
finally did it with 29 seconds left!
+1
Level 18
Jun 1, 2017
so easy. LOL 2:30 is fast??? 20/20
+1
Level 66
Jun 8, 2017
No way this can be done calculator free.
+1
Level 71
Jun 24, 2017
What is the point of doing a quiz like this with a calculator?
+1
Level 66
Jun 15, 2017
i got 14/20 first try and im 11. Is that good or bad?
+1
Level 24
Aug 10, 2017
20/20 = 14 seconds left *phew*
+1
Level 39
Aug 18, 2017
40 seconds left on my first try while having a metaphorical brain fart.
+1
Level 70
Aug 30, 2017
First Try, 44 sec left, 57th birthday in one month - i'm feeling very very old :-)
+1
Level 67
Sep 14, 2017
I am using this quiz as a mental arithmetic practice for my students at the end of math-lessons.
+1
Level 19
Oct 6, 2017
0:36 left :)
+1
Level 42
Oct 18, 2017
1:11 left, 1:17 left
+1
Level 36
Nov 23, 2017
missed 1 :(
+1
Level 34
Dec 13, 2017
Crap! I missed the last one but I coulda got it!
+1
Level 67
Dec 19, 2017
Last one I needed for the Math Whiz badge, which has eluded me for ages. Finally got it, and with 51 seconds to spare!
+1
Level 37
Dec 24, 2017
15 is good I think !
+1
Level 54
Jan 1, 2018
Got all with 1:26 left
+1
Level 23
Jan 6, 2018
Fun quiz, but the difficulty varies a lot from time to time.
+1
Level 65
Jan 27, 2018
1:06 (first attempt)
+1
Level 38
Mar 30, 2018
Supposed To Maths
+1
Level 21
Apr 5, 2018
SORRY QUIZMASTER!!! I USED A CALCULATOR! Got it done with 1:37 to spare. I hate mental math... :(
+1
Level 46
Apr 21, 2018
50 seconds
+1
Level 50
May 23, 2018
Did the hard ones by hand and the others in my head, finished with 20 seconds left.
+1
Level 43
Jul 5, 2018
20/20 at 1:51
+1
Level 17
Aug 2, 2018
1:06 left
+1
Level 60
Aug 15, 2018
I FINALLY DID IT
+1
Level 34
Aug 31, 2018
10/20 cuz I suck at math
+1
Level 30
Sep 30, 2018
It's almost 1AM and I'm counting numbers because I'm bored. Why? I have no effin clue
+1
Level 65
Oct 1, 2018
1:10 remaining.
+1
Level 65
Dec 21, 2018
4 seconds faster this time...
+1
Level 19
Oct 29, 2018
i did them all, no calculator with 2:03 remaining
+1
Level 19
Oct 29, 2018
Also I am only 13 and in 8th grade. But currently I have higher Iq than the average adult. And typing speed helps too
+1
Level ∞
Oct 29, 2018
The average adult in the western world has an IQ of around 100, so I wouldn't brag too much about that. ;)
+1
Level 43
Oct 30, 2018
20/20 with 1:24 remaining :)
+1
Level 43
Nov 4, 2018
I redid it this time and got 1:48 :)
+1
Level 66
Nov 9, 2018
really good practice for mental math GG!
+1
Level 67
Dec 16, 2018
tough especially since I have memory issue because of my disease (often forget halfway a sentence what I was trying to say, and in the beginning i couldnt read anymore, cause after the second word I had forgotten the first. Reading got like 60% better, still cant focus at all. but math .. I allways get stuck after the first number even with the most basic stuff like 18+5 it took me several minutes sometimes, cause my mind was like a record being stuck, couldnt get past 18+....18+.....18+..... )

so extremely happy I finished this one with 100% the first go !! And actually quite surprised!

+1
Level 67
Dec 16, 2018
I guess it helps I have continued to do things that challenges your mind (as I did before) I wonder how bad my memory would ve been otherwise.
+1
Level 38
Jan 4, 2019
100% with 42 seconds left!
+1
Level 17
Jan 15, 2019
1:40 to spare :)
+1
Level 53
Jan 24, 2019
New record of 2:07 remaining!
+1
Level 53
Mar 26, 2019
+1
Level 38
Apr 12, 2019
Got 18 in my head first try... let's see if I can't get 20.
+1
Level 38
Apr 12, 2019
Ah yeah! 3rd try got all 20 in my head with 17 seconds to spare!
+1
Level 31
Apr 23, 2019
15/20 man I'm freaking stupid
+1
Level 46
Apr 27, 2019
1min43
+1
Level 58
May 25, 2019
12 year old with 35 seconds to spare
+1
Level 35
Aug 23, 2019
FINALLY, got 100%
+2
Level 52
Dec 24, 2019
Done in 51 seconds...
+1
Level 65
Apr 4, 2020
did it in 1m9s -- 12seconds of my previous best.
+1
Level 48
Apr 22, 2020
Done in a minute :)
+1
Level 35
May 6, 2020
I took this test a long time ago and after lots of attempts, I finally got 100% doing it in all in my head in August 23, 2019. Fast forward to May 6 (7) 2020 and I got 100% on my first try with 1 minute left.
+4
Level 21
May 30, 2020
not wanting to brag, but i proudly brought the average down by 1!
+1
Level 43
Aug 4, 2020
Hi, done with 10 seconds left.
+1
Level 41
Aug 12, 2020
19/20 all time used so close
+1
Level 28
Sep 2, 2020
20/20 with 2 seconds to spare... stressed me out lol
+1
Level 56
Sep 13, 2020
Dam how the average is score is 15, on 5 tries i got 14 at best.

Everybody thinking they above average looks like me is below sad sad

+2
Level 18
Feb 14, 2021
THIS QUIZ IS WAY TOO EASY
+1
Level 31
Mar 12, 2021
100% with 16 seconds left on the clock.
+1
Level 16
Mar 13, 2021
I finished it, with 56 seconds remaining!! i am 12!!
+1
Level 37
Mar 14, 2021
Too much time, should make it one minute instead
+1
Level 19
Jun 5, 2021
I completed half of it then I got to level 15 this is my first comment on a quiz and 2nd comment on JetPunk.
+2
Level 36
Jun 9, 2021
passed with 1:46 remaining, got my math wizard badge!
+1
Level 23
Jun 30, 2021
amazing quiz!
+2
Level 27
Aug 13, 2021
first try with 21 seconds left.
+1
Level 66
Aug 16, 2021
Finally got with 18 seconds left... right as I'm tired and about to go to bed.
+1
Level 29
Sep 13, 2021
Love this....1.19 left to go....do the tens first, then easy to add the single multiplier.
+1
Level 92
Nov 16, 2021
Done in 40'' (1'50'' to go).
+1
Level 25
Dec 20, 2021
Finished in 1 min, 1 sec :)
+1
Level 45
Jan 24, 2022
84x5
+1
Level 45
Jan 24, 2022
i also got 23x3
+1
Level 26
Jan 28, 2022
Not the greatest mathematician but I am trying to get all the badges (video game badge was a pain to achieve)
+1
Level 26
Jan 28, 2022
Was AFK and almost ran out of time but I came back with 2 mins left and thanks to my quick math skills (high school sucks but it's a valuable lesson) I beat it with 53 seconds left.
+1
Level 48
Feb 13, 2022
Bro beat it in 50 seconds fast math is my kind of thing

Keep up the good work!

+1
Level 17
Feb 17, 2022
1:31 left but i used a calculator :( I got mad after getting like 19/20 5 times in a row
+1
Level 26
Feb 25, 2022
it was so tempting to use the caculator
+1
Level 33
Mar 30, 2022
this is hard
+1
Level 33
May 2, 2022
This is a great exercise to revisit daily. I really like that it changes each time.
+1
Level 49
May 3, 2022
very fun brain exercise
+1
Level 43
Jun 1, 2022
20/20 without starting the quiz :)
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