竖式计算.3.84×7.5= 13.2÷2.4=
你认为怎样算简便就怎样算.24.6+31.79+25.4 3.21﹣1.O5﹣1.7 (0.5+0.25)×476﹣2.4÷0.08 4÷[1﹣(0.8+0.12)] 2.46×9+9×7.54
998﹣736÷32+25;0.55×1.4+18.395÷6.5;3.1.4+9.8×7.5﹣0.75÷2.5;68÷(0.85×4.7+5.3×0.85);(2÷0.25+0.25÷2)×1.2; 0.21÷[(17.4+3.6)×0.01]×2.5.
递等式计算,能简算的就简算.(1)3.7+6.3×0.5(2)21.6÷3×(20﹣19.8)(3)2.5×2.9×4×2(4)16.53﹣3.57﹣6.43(5)5.28×9.8+0.2×5.28(6)28﹣2×9.5+2.8(7)(10﹣9.2)×(2.6﹣2.1)÷5(8)1.5×[(3.6﹣0.36÷0.6)﹣5].
4.27﹣1.72+0.73﹣2.2812.83﹣(9.5+2.83)16+(5.32﹣2.16)5.6×0.1259.8×0.996.2×0.35+0.35×3.81.2×198﹣9.8×121÷(1.3×28)
下面各题怎样算简便就怎样算. 72.8÷5.6+24.9 5.8×13.7+5.8×6.3 49×101﹣492.5×32×1.25 3.9÷1.5÷2 32.7+0.14×50.