列式计算.
递等式计算:(能用简便方法计算的要用简便方法计算)0.11×1.8+8.2×0.110.8×(3.2﹣2.99÷2.3)3.5﹣3.5×0.9812.5×2.5×3.2(8.1﹣5.4)÷3.6+85.7.
脱式计算,能简算的要简算.(1)(25﹣0.2)÷(1÷0.25)(2)1.5×[4+15.6÷(1.65﹣0.35)](3)90.45﹣32.44﹣6.89×4 (4)1.2×6.08+3.92×(6÷5)
直接写得数.4.5×10.1×2= 7.8+13.6+2.2= 7.25×1.3÷7.25=(4.2﹣0.17)×(2.1﹣2.1)= 300.3+30.03+3.003= 8.8×0.125=
能简便的用简便方法计算.600÷25÷4 156×63+156×36 40×13×0.25 14.27﹣9.62﹣4.38 4.57×0.39+5.43×0.39 4.9×99+4.9
计算下面各题,能用简便算法的用简便算法.①3871﹣(1080﹣740)×7 ②5175÷207+102×9③0.9+1.08+0.92+0.1 ④13.59﹣6.91﹣0.09⑤983×(3.8+2.2)+0.237×1000 ⑥0.8×(35+65)×5÷100⑦30﹣[17.8+(6.2+38÷10)].