fractions

w do we need to flip and times freactions when we are deviding

Answers
when you are diving fractions you have to flip the second fraction over and then replace the divide sign with a multiplication sign
chloe
07 April 2011
we would re-write this as 1/2 x 4/1
chloe
07 April 2011
for example if you had the problem: 1/2 ÷ 1/4
chloe
07 April 2011
So we have 1x4 and 2x1 giving us a total answer of 4/2
chloe
07 April 2011
Then you just multiply the top two numbers together and put then over the bottom two numbers
chloe
07 April 2011
This then simplifies to 2 as 4÷2 = 2
chloe
07 April 2011
The question was why ? When you divide by a fraction, that is the same as multiplying by its reciprocal i.e. turned upside down.
billboffin
11 April 2011
it's just a rule in maths, that you have to follow
rachel_dance123
17 April 2011
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