Math Is Fun Forum

Tina13

Guest

Problem over here!

                         yah yah i know you came here to find a math
                        problem but it's something else like why do i feel
                           like i'm not good at math i used to be good at it
                       but now i've just jruped if you can just give me
                         some advies (please)          Thanks
                       
                                   Tina13                                                       

                                 

           

John E. Franklin

Member

Registered: 2005-08-29

Posts: 3,588

Re: Problem over here!

If an apple pie has 2 pieces and
each half is called 1/2.
Then what is the reciprocal of 2?
Answer: 1/2
And what is the reciprocal of 1/2?
Answer: 2

If a blueberry pie has 4 pieces, and
each quarter is called 1/4.
What is reciprocal of 4?
Answer: 1/4
What is reciprocal of 1/4?
Answer: 4
other Answer: 4/1  , same thing.

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igloo myrtilles fourmis

Tina13

Guest

Re: Problem over here!

                                                                     
                              Thanks john E. Franklin

                      i can'd of got that but you see English
                             isent my frist language
                      so if it not a problem what does
                reciprocal mean (did i even spell it right)

                     i know i know i'm i giveing you a headache
                                                 (sorry)     

   Tina13                 

John E. Franklin

Member

Registered: 2005-08-29

Posts: 3,588

Re: Problem over here!

There are 2 numbers.
One is 1.1, the other is 0.9
They are almost reciprocals, but not exactly.
Why?
Because 1.1 is above 1, and 0.9 is below 1.
But the 1.1 has to get bigger to 1.1111(11...)
Or the 0.9 has to get bigger to 0.90909(09...)
But if they both get bigger, then they are
still not exactly reciprocals, only one of them
has to get bigger to fix them if
you start with 1.1 and 0.9.
1.1 is 1 + 0.1 and
0.9 is 1 - 0.1
But they are not reciprocals,
but they are almost reciprocals.

Now 5/16 is the reciprocal of 16/5
and 27/22 and 22/27 are reciprocals.

Also  1 is the reciprocal of itself, just 1.
Because 1 times 1 is 1.

But 2 divided by 2 is 1,
so 2 and 1/2 are reciprocals.

And 2/3 divided by 2/3 is 1,
so 2/3 and 3/2 are reciprocals.

And 3/4 times 4/3 is 12/12 which is 1,
so 3/4 and 4/3 are reciprocals.

Reciprocals come in pairs, they bounce back and forth
above and below 1, if they are both above zero.

If you have 6 gumballs, and you give
3 away to Tammy, then you have 1/2
of what you started with.  But the
reciprocal of 1/2 is 2/1 or just 2.
So Tammy's 3 gumballs times 2
gets you back to 6 again.

times means multiply

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igloo myrtilles fourmis