能简便的用简便方法计算. 0.88×4.9+5.1×0.88 2.5×8×0.4×0.125 0.65×201 21.36÷0.8﹣12.9 0.25×1.25×3.2 7.28+3.2÷2.5.
x-x=
(2.5-2.5× 0.6)÷0.4
o.5÷[一(一]]
47.3-1.7×5-1.5
2013-1728÷32