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Division

Posted: Thu Jul 12, 2012 3:01 pm
by AR1890
Hi

Can somebody please explain the simplest way to divide this number .

Share:

a) 37.50 by 25

Re: Division

Posted: Thu Jul 12, 2012 3:09 pm
by Reading Mum
Share:

a) 37.50 by 25

I would turn that into

37.5 x 4 divided by 25 x 4

i.e. 150 divided by 100

so the answer is 1.5

Re: Division

Posted: Fri Jul 13, 2012 10:36 pm
by mystery
Yes - in other words to divide by 25 you multiply by 4 and divide by 100 because 4/100 = 1/25. It's easy to multiply by 4 and it's easy to divide by 100, so this should be quicker than long division.

Re: Division

Posted: Sat Jul 14, 2012 9:27 pm
by 999 mum
AR1890 wrote:Hi

Can somebody please explain the simplest way to divide this number .

Share:

a) 37.50 by 25
how about:

As the number is between 25 and 50, then the answer must be between 1 and 2.

37.5-25=12.5 (so that gives the 1)
12.5 is half of 25 (and the .5)