直接写得数.1﹣0.99= 3.6÷0.4= 8.2+2.8= 14×0.25×4=8.8+1.12= 2.6+9.8+3.4= 1×0.1÷1×0.1= 15﹣3.2﹣4.8=19×0.7+0.7= (1.5+0.25)×4=
怎样简便怎样算. 1.73×3.5+3.5×4.27 3.36×2.5×0.4.
简便计算: 54.8﹣1.25﹣1.755.81+8.3+4.19+11.7 3.54×0.29﹣0.29×2.54 12.5×3.2×2.0.48×9.94.8×6.9+3.1×4.8.
8.37﹣2.58﹣3.42.
74+16=16+74 .
96×1.02=3.96+3.96×0.02,运用了乘法分配律. .