A digital clock shows either three or four digits. At what time do the digits have the greatest sum?
Mythili Thota (O'keefe)
8/25/2014 05:39:43 am
I think that the digits in 12:59 add up to be the greatest time because 12:59 are the last four numbers in 12 hours. after 12 hours the time doesn't go to 13:00 it goes back to 1:00.
Mrs. Harrington
8/26/2014 01:04:22 am
Hi Mythili, 8/25/2014 08:54:40 am
this is hard! I think it is 12:59 l will try to do 1 of these every Friday but it is Monday! #-+=x 6:53 pm 8-25-2014
Mrs. Harrington
8/26/2014 01:04:54 am
HI Hannah,
Isabella Parks
8/25/2014 09:12:09 am
I got 9:59 because 9+0=9 and 5+9=14. That was the highest sum I could get. Just because 12:59 is the highest number that does not mean that it is the greatest sum.
Ryan Kim
8/25/2014 10:12:56 am
23:59
Hannah Jane Noland ( Mr.O'keefe's class)
8/25/2014 10:37:48 am
The answer is 19:59, because 59 is the highest you can go in minutes.19 is the highest you can go in hours, and the sum is 24.
Julia Hipetinger (Mrs.Jeffers)
8/26/2014 07:20:28 am
In Germany where I grew up it would be 23:59.But here in Georgia it only goes up to 12:59 so those are my answers
Mrs. Harrington
8/27/2014 10:06:34 pm
Hi Julia,
owen yntema mrs. watson
8/27/2014 10:03:01 am
The answer is 9:59 because... 9 is the highest hour it can go up to before double digits. example 10=1+0=1 1 is smaller than 9. And 59 is the highest minutes you can go up to. The sum would be 23 (9+5+9)
Mrs. Harrington
8/27/2014 10:09:53 pm
Owen,
erica brabner [watson]
8/27/2014 10:09:42 am
Mrs. Harrington
8/27/2014 10:08:29 pm
I know these challenges are hard! That's why they are challenges :) 8/27/2014 10:53:00 am
I think it's 9:59, because 9+5+9 is 18+5. 18+5 is 23. 23 is the highest sum!!!!
Mrs. Harrington
8/27/2014 10:09:05 pm
Hi Jonah,
Bhargav Ashok ( Mrs.Gillihan's class)
8/29/2014 10:42:54 am
It's 9:59 because it is the greatest sum, you just add 9+9+5 then you get 23.
Josephine Vasilco ( Gillihan )
9/30/2014 07:27:01 am
My answer is 9:59 because when you add them up it equals 23.Even though other times have four digits,those digits don't have high enough numbers.
Joshua Strong
9/30/2014 10:00:47 am
I changed my answer to 9:59 because 9+5+9=24
Blake Seitz (Mrs. Gillihan's class)
9/30/2014 10:35:53 am
The time that gives you the largest sum is 9:59 because 9+5+9 equals 23!!!!!! Comments are closed.
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