succeed in maths
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succeed in maths
hi need help working theses fractions as follows..
a: 1/9+7/9=
b: 2/5+2/3=
c: 5/8+1/2=
d: 5/6+1/9=
subtract
i: 7/8-1/2=
j: 3/4-1/3=
k: 5/8-1/2=
l: 8/11-2/3=
m: 11/15-3/5=
thanks gilbertstone
a: 1/9+7/9=
b: 2/5+2/3=
c: 5/8+1/2=
d: 5/6+1/9=
subtract
i: 7/8-1/2=
j: 3/4-1/3=
k: 5/8-1/2=
l: 8/11-2/3=
m: 11/15-3/5=
thanks gilbertstone
Re: succeed in maths
To add or subtract fractions you need to make sure they have a common denominator.
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- Posts: 15
- Joined: Tue May 15, 2012 6:03 pm
Re: succeed in maths
hi yoyo123 thank you fer your response could you please give me a example thanks gilbertstone
Re: succeed in maths
if you google adding and subtracting fractions you will find what you are looking for
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Re: succeed in maths
thank you very much.
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- Joined: Sun Jan 20, 2013 11:22 am
Re: succeed in maths
one example i picked up for you
2/5+2/3=
(15/5*2) + (15/3*2)
----------------------
15
6 + 10
----------
15
16
--
15
2/5+2/3=
(15/5*2) + (15/3*2)
----------------------
15
6 + 10
----------
15
16
--
15
Last edited by goldenstar on Sun Feb 24, 2013 1:49 pm, edited 1 time in total.
Re: succeed in maths
check that example ...
Re: succeed in maths
goldenstar wrote:one example i picked up for you
2/5+2/3=
(15/5*3) + (15/3*2)
----------------------
15
9 + 10
----------
15
19
--
15
2/5 + 2/3 converted to /15 = (2*3)/(5*3) + (2*5)/(3*5)
= 6/15 + 10/15
= (6+10)/15
= 16/15
= 1 1/15
You can check this by converting to percentages: 2/5 = 40%, 2/3 = 67% (approx), which would be c.107%. 19/15 (1 4/15) is nearer to 125%.
Outside of a dog, a book is a man's best friend. Inside of a dog it's too dark to read.Groucho Marx
Re: succeed in maths
Clues:
a: 1/9+7/9= this one should be straightforward
b: 2/5+2/3= convert this into 15ths (?/15+?/15)
c: 5/8+1/2= convert this into 8ths (5/8+?/8)
d: 5/6+1/9= convert this into 18ths (?/18+?/18)
subtract
i: 7/8-1/2= convert this into 8ths (7/8-?/8)
j: 3/4-1/3= convert this into 12ths (?/12-?/12)
k: 5/8-1/2= convert this into 8ths (5/8-?/8)
l: 8/11-2/3= convert this into 33rds (?/33-?/33)
m: 11/15-3/5= convert this into 15ths (11/15-?/15)
a: 1/9+7/9= this one should be straightforward
b: 2/5+2/3= convert this into 15ths (?/15+?/15)
c: 5/8+1/2= convert this into 8ths (5/8+?/8)
d: 5/6+1/9= convert this into 18ths (?/18+?/18)
subtract
i: 7/8-1/2= convert this into 8ths (7/8-?/8)
j: 3/4-1/3= convert this into 12ths (?/12-?/12)
k: 5/8-1/2= convert this into 8ths (5/8-?/8)
l: 8/11-2/3= convert this into 33rds (?/33-?/33)
m: 11/15-3/5= convert this into 15ths (11/15-?/15)
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Re: succeed in maths
a basic £7.99 calculator will do this for you:
http://www.amazon.co.uk/Casio-FX-83GTPL ... 001O3IF9U/" onclick="window.open(this.href);return false;
http://www.amazon.co.uk/Casio-FX-83GTPL ... 001O3IF9U/" onclick="window.open(this.href);return false;