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Topic: Kindergarten App Math (Read 863 times) |
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Speaker
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Kindergarten App Math
« on: Jan 22nd, 2003, 8:09pm » |
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Here is the problem, exactly, except for all the words in this version are in English.
Next, we have an arithmetic problem.
5 + 8 + 3 = 72
Normally these add up to 16.
But, if you insert a 2, they add up to 72.
The problem, where to insert the 2.
There are no other rules. The term from which I derived "insert" could also be "write-in." But, I don't think this reflects on the puzzle.
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NickH
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Re: Kindergarten App Math
« Reply #1 on: Jan 22nd, 2003, 8:26pm » |
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How about this? Highlight hidden text below to view...
5 + 8² + 3 = 72
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Nick's Mathematical Puzzles
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Chronos
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Re: Kindergarten App Math
« Reply #2 on: Jan 23rd, 2003, 7:48pm » |
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I thought of the same thing as NickH, but is that really something that kindergartners are expected to know? Or is there some other, kinder, answer?
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Speaker
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Re: Kindergarten App Math
« Reply #3 on: Jan 24th, 2003, 12:41am » |
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Chronos
I agree with you, it seems a bit much to ask a kid trying to get into kindergarten, but I can find no other answer.
I am not making these up, you can see them and some others at
http//www1.odn.ne.jp˜hattori01/seito/quiz1.htm
It is all in Japanese, and true to the spirit of riddling, no answers.
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They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. <Ben Franklin>
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udippel
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Re: Kindergarten App Math
« Reply #4 on: Jan 25th, 2003, 9:27am » |
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You never know in these days ...
... how far we can go !??
The only one something without ** is splitting hairs:
5(1 + 1)8 + 3 = 72 or so ... as far as I can think.
Even for this, Kindergarten must be very different in JP!
Uwe
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Icarus
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Re: Kindergarten App Math
« Reply #5 on: Jan 25th, 2003, 11:08am » |
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on Jan 25th, 2003, 9:27am, udippel wrote:
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udippel
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Re: Kindergarten App Math
« Reply #6 on: Jan 25th, 2003, 7:06pm » |
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Does my mental arithmetics fail me these days ??
Surely don't want to convince you of this, but since we don't have the clear wording and **2 is maybe not Kindergarten even in JP ....
5 + 8 + 3 = ?
We 'write-in' another 2 = 1 + 1:
5 1 + 1 8 + 3 = 72 (according to my (wrong?) mental efforts)
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Icarus
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Re: Kindergarten App Math
« Reply #7 on: Jan 26th, 2003, 12:14pm » |
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Okay - I'll buy that - though NOT as something Japanese Kindergartners are more likely to come up with than squaring!
But as you wrote it 5(1+1)8+3 = 5 x 2 x 8 + 3 =83 not 72. The parentheses are important!
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"Pi goes on and on and on ...
And e is just as cursed.
I wonder: Which is larger
When their digits are reversed? " - Anonymous
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udippel
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Re: Kindergarten App Math
« Reply #8 on: Jan 26th, 2003, 5:21pm » |
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You don't have to buy it! I myself would vote for **2, and as I wrote further up,
" Even for this, Kindergarten must be very different in JP! "
Once someone asked for 'kinder' answers, I considered this just another riddle. And my 5(1 + 1)8 + 3 was meant as hint; as pseudo-code.
Sorry for misleading you!
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Nikki
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Re: Kindergarten App Math
« Reply #9 on: Jan 4th, 2005, 10:00pm » |
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How about you turn the plus sign sideways.
5 x 8 + 32 =
40 + 32=
72
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Grimbal
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Re: Kindergarten App Math
« Reply #10 on: Jan 5th, 2005, 1:20am » |
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Aha. Suppose the problem is given with plastic symbols on a magnetic board, like those you can see in kindergardens, then it makes sense.
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rmsgrey
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Re: Kindergarten App Math
« Reply #11 on: Jan 5th, 2005, 8:03am » |
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How are the numbers represented in the original? If something other than the Western representations used in this version is used, then there might be some other graphical trick...
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