1.6÷0.8= 7.2÷0.6= 3.9÷3.9=1.8×0.8= 3.7+4.8= 0÷6.82=2.5÷10= 16﹣5.7= 1.3×0.6+1.3×0.4=9.57﹣1.34﹣3.66=
科学合理的计算.1.5×8.4+3×0.3+15×10% 30×(+﹣)
怎样简便就怎样计算.4.98+8.02×2.5 60.8﹣40.8÷2.5 0.8×69.6×12.54.98×99+4.9 6.48÷3.2÷2.5 1.2×7.6+7.6×6.8.
脱式计算,能简算的必须简算.12.5×0.25×320 4.57×0.36+4.57×0.64 103×2.478.6÷12.5÷0.8 48×0.25×5 15.72÷(3.8﹣3.2×0.75)
递等式计算(能简算的要简便计算).3.6÷(3.6+1.2), 26.18÷(5.2﹣3.5)+0.06 (31.6﹣11.7)÷2.5÷0.4[11÷(1﹣0.8)]÷0.1 20.12×48﹣201.2×1.4+2012×0.66.
递等式计算.(能简算的要简算)9.6÷0.4×0.25 29.7÷(5.85÷0.65)7.4×9.9 3.84﹣2.7×0.648.68﹣8.68÷0.56×0.5 4.7×4.7+4.7+4.3×4.7.