Fight 10+10 amazing digit never give up to 10

Fight 10
Don't be stupid crying by yourself!
The rules of the game:
1, time: 60 seconds.
2, arbitrary square Numbers together can eliminate a corresponding squares equal to 10.
3, eliminating a square can get one point.
4, every time get 10, reward a second time.
primary students are good at arithmetic addition,would you?
for example:
1+9=10
2+8=10
1+2+7=10
2+3+5=10
1+2+3+4=10
2+2+2+4=10
1+1+2+2+4=10
……