(连山区)2÷0.1= ;6.35﹣1.9=;+1.4= ;0.36+0.4=;(2+)×28= ;7﹣﹣= ;×÷×= ;+=
x-x=
(2.5-2.5× 0.6)÷0.4
o.5÷[一(一]]
47.3-1.7×5-1.5
2013-1728÷32