脱式计算,(能简算的要简算)
25×7.6×0.823.7﹣3.9+6.3﹣6.12.5×64×1.25.
1÷(1﹣0.98)5.9×7.8+5.9×1.2+5.926.8×0.25﹣6.8÷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 1.25×7.4×81.6﹣0.2÷5×40.
递等式计算.(能简算的要简算)
①2.5×3.2×1.25②6.06﹣3.5×0.24
③60.4﹣(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)÷1.4
19.4×86+19.4×13+19.4
3.72÷1.3+0.18÷1.3.
计算下面各题,能简算的要简算.
1.29+3.7+2.71+6.33.75÷[0.3×(1.34﹣0.84)]7.2×7.2+7.2×2.8
0.25×0.8×0.125×425×10.8×0.0415.32﹣1.8×5﹣3.46.