竖式计算12.42+0.48= 0.56+11.534= 44﹣22.13=91﹣22.035= 52.6+21.237= 9.15﹣2.18=
++++++++
2.009×43+20.09×2.9+200.9×0.28
(2.5×)÷(×1.8)-0.75÷
20142014×20142013-20142015×20142012
1375+450÷18×25