口算.3﹣1= 7.125+1= 1÷= 0×2= 3×4=25×28= 7.2÷0.6= 4÷1= 0.125×0.8=
脱式计算.(能简算的要简算)7.02×1.02 1.125÷0.092001×0.54+2001×0.46 0.64×0.25+0.750.78÷26+0.5×0.02 [2.8﹣2.8×(2.8﹣2.8)]÷0.78×[1÷(3.2﹣2.95)] 33.4﹣26.465÷(2.6+4.1)
脱式计算,(能简算的要简算)25×7.6×0.8 23.7﹣3.9+6.3﹣6.1 2.5×64×1.25.1÷(1﹣0.98) 5.9×7.8+5.9×1.2+5.9 26.8×0.25﹣6.8÷4.
计算下面各题,注意运用简便方法.30.3÷[(1.3+1.2)×0.6] 0.59×7.2﹣7.2×0.39 1.25×7.4×8 1.6﹣0.2÷5×40.
递等式计算.(能简算的要简算)①2.5×3.2×1.25 ②6.06﹣3.5×0.24③60.4﹣(10+9.6÷0.4) ④2.3×3.2+2.3×6.8.
脱式计算,能简算的要简算 19.6﹣26.72+80.4﹣3.28 1.5×(6﹣0.68)÷1.419.4×86+19.4×13+19.4 3.72÷1.3+0.18÷1.3.