Math Is Fun Forum

user1234

Member

Registered: 2006-11-21

Posts: 8

newbie help (again)!

hi. does anyone know how can  simplify this 0.7855 x 2'6  (2'6 is 2 to the power of 6)  into whole numbers like this  3 x 2'-3 (i know this is not the correct answer) any suggestions? thanks 4 ur help?

if u dont get what i mean:

e.g

0.65625 x 21'3
=5376

can be simplifies to whole numbers like this:

42 x 2'7
= 5376

which also gives the same answer. is there any method of working this out??

mathsyperson

Moderator

Registered: 2005-06-22

Posts: 4,900

Re: newbie help (again)!

I'm not sure what you mean. Your example doesn't work, because 0.65625 x 21^3 = 6077.531..., not 5376.

What are you trying to do?

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Why did the vector cross the road?
It wanted to be normal.

user1234

Member

Registered: 2006-11-21

Posts: 8

Re: newbie help (again)!

thats supposed to be 2'13 sorry... anyway this is what i am trying to do how do i put the number -1999 into this form     A x 2'b   (A and b must be whole numbers) can give me an answer to this plz? and tell how i can work it out. (A can be a maximum of 63, and b should be max of 31) cheers!