Can you solve this math problem in your head? What time is it when 3/8th of the day finished?

[@jimwalker1089]

Having had suffered a minor stroke these simple math problems have taught me to remember math problems. I worked as a land surveyor for many years. I felt really good solving this almost instantly. In geometry the the angles are measured in hours minutes and seconds.That has nothing to do with the fraction problem but it was a major advance in my mind because I could picture it.🙂

[@russelllomando8460]

Got 9 2 seconds. 24/8 = 3 so 3 X 3 = 9 Thanks for the fun.

[@47AndyT]

Pretty easy, isn't it?

[@DanGoodman-n4b]

@@47AndyT Partial credit. You didn’t specify AM.

[@petesmith9472]

Exactly

[@dlkline27]

Very easy brain candy. 24/8=3 3X3=9 Of course it could be set up as 3/8 X 24/1 to get the same result: 3/8 X 24/1 = 72/8 = 9

[@bazkeen]

8 goes into 24 3 times. Therefore 3 x 3 is 9 Thus it will be 09:00 hrs or 9 am

[@stephenangeloni9432]

I really enjoy these maths challenges. It took me less than 5 seconds to solve. For me, over 11 minutes was just too much time explaining - it reminds me why I lost the plot with maths at school at ended up failing.

[@MarcelDekker-il3vw]

good you attend people on mental math! appreciated x 3

[@lizwirtz5968]

I got 3.30 (AM) that was silly. Converting 24 hours to minutes, then divide by 8 and multiply by 3. Need to try again. I guess it helps to calculate with 24 hours in a day instead of 12.

[@btpcmsag]

My grandson is 4 and he tells time to the 1/4 hour because of the Westminster Chime clock. He even knows the sequence of the bells; A, BC, DEA, BCDE+Hours.

[@dazartingstall6680]

Your grandson might like an old piano piece, "Big Ben Boogie," by Winifred Atwell. It's on YT.

[@dazartingstall6680]

3/8 = 9/24 = 09:00

[@Deadite9405]

13mm per 1/2", and 3/8" is a bit less than 10mm, so about 5/13 of a day, which is a bit less than 5/12 of a day, which is about 10am. So a bit past 10.

[@dazartingstall6680]

Regarding the percentage "bonus" example. How I picture it mentally goes something like: 25% of 200 is 200% of 25. Which is 50. Not a great example of the commutative property being useful, since ¼ of 200 is pretty trivial, but it can be a useful method in mental arithmetic in some situations. if we want x% of y, where y is a nice fraction of 100, the mental arithmetic can be much easier if we switch it to y% of x, then express y% as a fraction.

[@panlomito]

25% of 200 doesn't need special treatment because ¼ . 200 is quite easy. But 17% of 300 is perfect to swap the numbers. For those who don't understand the swap here is the explanation: 17% = 17/100 so 17/100 x 300 = (17 x 300) / 100 = 17 x 300/100 = 17 x 300% = 17 x 3 = 51

[@dazartingstall6680]

@@panlomito Yep. It's definitely one of those "sometimes it's useful, sometimes it's not" mental arithmetic tricks.

[@billmorris2613]

I got it by 1/8 of 24 hours = 3 hours X 3 = 9 hours into the day = 09:00 hours.

[@ChristopherLusher]

When people ask me for the time, I like to say nonstandard fractions like, "it's a third to four" or "it's a fifth past noon".

[@alexandrabloch1687]

Hello from Israel How are you all? All I did is this : 3/8×24 = 3/8×24 9

[@vivienhodgson3299]

Maths dunce here (and I'm not exaggerating!). I solved it in less than a minute.

[@jimgardner5129]

My very quick calculation says 9 AM. Took about 2 seconds to solve.

[@lboutard]

I’m visual. I looked at midnight to noon four parts. 1-3 is one part 3-6 second part 6-9 third part and 9-12 fourth part. Then noon to midnight four parts (same break down) =8 parts Back to midnight I went three parts which is 6-9 ending at 9am. Crazy enough it took me only seconds to do but much much longer to explain 😂

[@btpcmsag]

Ditto! 24 ÷ 8 = 3 hours per eighth. 3 x 3 = 9 (am). Done.

[@raya.pawley3563]

Thank you

[@pandurangaraonimmagadda9966]

(3/8).24=9 Morning 9 AM

[@jsEMCsquared]

That would be about 4 considering my average day.

[@chrisdissanayake6979]

1 day = 24 hours 3/8th of a day = 24x3/8= 9 hours. Then the time is 9am.

[@gayschaye4600]

These are good 👍

[@Rev03FFL]

If a student didn't immediately recall 8 is a third of 24, then they might divide the top and bottom by 2 to get 4 hours, then multiply by 3 to get 12 hours. Then hopefully remember a day is 24 hours, not 12 hours, and multiply again by 2 to get 9/24. And then hopefully remember this is AM not PM.

[@dwaipayandattaroy9801]

9 am

[@TheAlienPoison]

I don't think that imagination is the issue, different thinking patterns can solve the problem more efficiently. Imagination is more heavily relying on non-imaginative things when it comes to math, which is denying itself at every turn. Edit: You shouldn't take back a mark for AM, i for one, always assume that 9 is 9 in the morning, while 9 in the evening is 21. You could always tell the time more clearly when you work with 24 hours, its pretty often that i mix up morning and night with the regular clock, which doesn't happen with the 24 hour clock. I demand full marks! You made a mistake!

[@michellen2325]

Easy..... 9 a.m. 1/8 is 3 hours so it's 3 + 3 +3; Oh, no I did not imagine any clocks....I devided 24 hours by 8 which is 3; 1/8 is 3 hours so 3/8 is 9.... pure numbers.... no clock.

[@jald910]

9am , also about 2 seconds .

[@tomtke7351]

24 hours/day 3/8 day × 24 hr/day = 9hours 9hours = 9am

[@petesmith9472]

24/8=3x3=9

[@abdukadirnur6110]

3/8 of 24= 3/8 x24=3x3= 9 hours of the day gone means it is 9am.

[@drgmhosamani3254]

3/8 th of a day means 3 hours.

[@argonwheatbelly637]

9am in about five seconds in my head. Sorry it took so long.

[@cynthiacatnott9012]

3/8×24

[@NishyVasquez]

I’m going to say 9am maybe. I’m on meds so I could be wrong.

[@tomlucia6143]

is that am or pm

[@billmorris2613]

09:00 hours.

[@garymitchell7551]

9 hours

[@millonthefloss]

3×24÷8=9 0900hrs

[@charlesmitchell5841]

3AM

[@btpcmsag]

But a day is longer than 8 hours. 3/8 x 8 = 3AM.

[@panlomito]

3/8 = 9/24 so 9 am

[@brucevaughn2886]

9 AM.

[@felipebriana8391]

9 AM

[@BezBezuidenhout-h2c]

9 o clock

[@charlesmitchell5841]

Oops, it’s 3x24/8=9

[@truthcooperator4683]

9 am

[@J-D248]

Its Tuesday

[@discobear5752]

It's Tuesday, so this must be Belgium.

[@jwoolem76]

Whaaaaaaaaaatttttt????? You started 12,674 other videos with "Okaaaaayyyyyy". Now you think it is acceptable to say ""Alright"? Noooooooo Mr. KZbin Mathman, that is not acceptable! I think you need to edit this video immediately!

[@annettegollon239]

9 a.m.

[@TomSpall-w6n]

😂

[@terry_willis]

09:00 . . . 7 nanoseconds.

[@btpcmsag]

WOW.

[@redblack8414]

9 a.m.

[@loisjacobs2961]

9 am

[@josephlaura7387]

9 am

[@lisbetsoda4874]

9 am

[@richardlapinski8303]

9 am

[@dawnradel9008]

9 am