1:4812-943+131

问题描述:

1:4812-943+131
2:16.28+5.395-1.18-4.305

1:4812-943+131=4812+131-943=4943-943=4000
2:16.28+5.395-1.18-4.305=(16.28-1.18)+(5.395-4.305)=5.1+1.09=6.19