How 2 improve my Mathematics , Chinese and Science ??

How 2 improve my Mathematics , Chinese and Science ?? Do you hav any idea ?
If you have, please gv me some comments.
Thank You ~

[[ Mathematics ]]
- Careless ( always count wrongly )
- Don't understand

[[ Chinese ]]
- Don't understand what's the meaning,
so don't no how to answer. (sometimes)

[[ Science ]]
- Section A ( OK )
- Section B sometimes don't no how to answer

`` - Who can help me in those subject ?
[ Mathematics , Chinese and Science ]

Left 12 more days only, then UPSR dy !
I promised my parents and my friends ,
that I must get above 5A.
If I get above 5A then my friend will belanja me eat something.
Haha =D