# Thread: how to add/subtract/divide halfs

1. ## how to add/subtract/divide halfs

hi, how can i learn to add/subtract/divide and multiply half's number?

for instance,

1/4 + 3/5

or

2/5+ 6

1.5+ 2/5

etc.etc.etc.

thanks!

2. Originally Posted by lambofgod
hi, how can i learn to add/subtract/divide and multiply half's number?
To learn, study some lessons!

. . . . .Google results for "multiplying fractions"

. . . . .Google results for "dividing fractions"

. . . . .Google results for "adding fractions"

Have fun!

3. [quote=lambofgod;287584]hi, how can i learn to add/subtract/divide and multiply half's number?

for instance,

1/4 + 3/5

or

2/5+ 6

1.5+ 2/5

etc.etc.etc.

you need to change decimals to fractions, mixed fractions to improper fractions.
ex.
1/4 + 3/5

in this case you should get the lcd. (20)

then, then divide 4 by 20 then multiply by 1
then, divide 5 by 20 and multiply by 3

5/20+12/20 then you can add now

17/20

in the second one,
1.5+ 2/5

change 1.5 to fraction that is 1 1/2 or 3/2

3/2 +2/5

the lcd is 10

10 divided by 2 times 3 is 15
10 divided by 5 times 2 is 4

15/10+4/10

19/10 or 1 9/10

### how do you add halfs

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