直接写出结果:0.25×4= 4.8÷8= 0.5+0.5÷0.5= 50×0.8= 0.99÷33=1.25×80= 4.5×0.1= 2.4÷0.8= 0.67+1.24= 9.6÷1.6=2.5×0.4= 8.2÷0.01= 1.3×7= 5.2÷1.3= 1.5×8=0.8×11= 7.2÷0.08= (2.7﹣2.7)×3.5= 2÷0.4= 3.06×0.2=
混合运算(能简便的一定要简便)(18%) 4.58+3.38+(5.48+6.62) 0.25×32×0.125 73.75﹣(4.3+8.75) 4.2×0.75+0.75×5.8 0.98×99+0.98 6.38÷0.05÷20.
简便计算: 1×2.5×4; 2.3×18+2×2.3.
神机妙算细又巧! 14.64+3.7×2.8 72.5×0.4﹣81.2÷56 13.8×0.45+138×0.055 (1.5÷4)÷(0.15÷4) (1.25+1.25+1.25+1.25)×0.8×0.25.
用简便方法计算. 51.27﹣8.66﹣1.3488×12528.4﹣3.96﹣1.04+4.6 64×64+36×6458×9935×4×25×20.
计算下面各题.(能简算的要简算) (1)40.5÷0.5+10.75(2)213.6÷0.8÷0.3(3)39.22÷3.7×2.5 (4)1.25×2.5×32(5)0.24×103(6)13.7×5+6.3×5.