来自马跃渊的问题
【脱式计算,能简算的要简算.19.92+14.4-9.927.02+11.38+20.9613.7+0.98+0.02+4.317×23-23×788×12596÷[(12+4)×2].】
脱式计算,能简算的要简算.
19.92+14.4-9.92 7.02+11.38+20.96 13.7+0.98+0.02+4.317×23-23×7 88×125 96÷[(12+4)×2].


【脱式计算,能简算的要简算.19.92+14.4-9.927.02+11.38+20.9613.7+0.98+0.02+4.317×23-23×788×12596÷[(12+4)×2].】
脱式计算,能简算的要简算.
19.92+14.4-9.92 7.02+11.38+20.96 13.7+0.98+0.02+4.317×23-23×7 88×125 96÷[(12+4)×2].
(1)19.92+14.4-9.92
=19.92-9.92+14.4
=10+14.4
=24.4;
(2)7.02+11.38+20.96
=18.4+20.96
=39.36;
(3)13.7+0.98+0.02+4.3
=(13.7+4.3)+(0.98+0.02)
=18+1
=19;
(4)17×23-23×7
=(17-7)×23
=10×23
=230;
(5)88×125
=(11×8)×125
=11×(8×125)
=11×1000
=11000;
(6)96÷[(12+4)×2]
=96÷[16×2]
=96÷32
=3.