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Adding Fractions
By Jenny Sharratt (P2574) on Wednesday, May 31, 2000 - 06:19 pm:

I'm not sure how to add and multiply fractions together because they are new to me, e.g.


2  7
12
 + 3  13
24
 = ?

But I CAN do
3  1
2
 +  3
8
 =  7
2
 +  3
8
 =  28
8
 +  3
8
 =  31
8
 =3  7
8


i am having problems with adding the fractions together, my class is not doing fractions at the moment but this is for my math club that i do after school i am aged 9 and in year 4 at school
thank you
By Neil Morrison (P1462) on Wednesday, May 31, 2000 - 06:55 pm:

Your second sum is exactly the way you should do the first one... you find a common denominator. In this case, you have


2  7
12
 + 3  13
24
 =  31
12
 +  85
24
 =  62
24
 +  85
24
 =  147
24
 =6  3
24
 =6  1
8

Do you see how its the same as the other one?

Neil M
By Dan Goodman (Dfmg2) on Wednesday, May 31, 2000 - 07:13 pm:

Try doing the same thing that you did with the second fraction, it also works for this one.

2  7
12
 + 3  13
24

=  31
12
 +  85
24
 (Step 1)

=  62
24
 +  85
24
 (Step 2)

=  147
24
 (Step 3)

=  49
8
 (Step 4)

=6  1
8
 (Step 5)

If you don't understand how I did this, please tell me which step you don't understand.

If you think you've got it, try this one (it's a bit harder):
1  1
3
 + 2  1
5
 = ?