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9.728÷2.5的简便运算?

9.728÷3.2÷2.5=9.728÷(3.2*2.5)=9.728÷(0.8*4*2.5)=9.728÷(0.8*10)=9.728÷8=1.216

9.728除以3.2除以5=9.728/16=9.6/16+0.128/16=0.6+0.008=0.608

25.2

32.5-(2.5-0.89)=32.5-2.5+0.89=30+0.89=30.89 行家正解,不明白可以追问!祝您学习进步 满意请点击下面的【选为满意回答】按钮,o(∩_∩)o谢谢

32.52-{6+9.728除以3.2}乘2.5=32.52-[ 6+9.728÷3.2 ]x2.5=32.52-(6+3.015)x2.5=32.52-22.5375=9.9825 怎么样 很好算吧! 给点分吧

7.44÷2.5的简便方法要利用商不变的规律.被除数和除数同时乘4,商不变来计算.7.44÷2.5=(7.44*4)÷(2.5*4)=29.76÷10=2.976 再看看别人怎么说的.

(1)2.5*(6+9.728÷3.2)=2.5*(6+3.04)=2.5*9.04=22.6 (2)45*7.3+27*4.5=45*(7.3+2.7)=45*10=450 (3)0.125*3.2*25=0.125*8*0.4*25 =(0.125*8)*(0.4*25)=1*10=10 (4)[8.3-(3.6+2.9)]÷0.72=[8.3-6.5]÷0.72=1.8÷0.72=2.5 (5)(140+0.42)÷7=140÷7+0.42÷7=20+0.06=20.06 (6)10.2*4.5=(10+0.2)*4.5=10*4.5+0.2*4.5=45+0.9=45.9

9.728/(3.2*2.5)=9.728/(2.5*4*0.8)=9.728/(10*0.8)=9.728/8=1.216

19.7÷2.5 =(19.7*4)÷(2.5*4) =78.8÷10 =7.88 你好,本题已解答,如果满意 请点右下角“采纳答案”.

2.5x(6十9.728÷3.2)=2.5x(6十3.04)=2.5x9.04=2.5*9+2.5*0.04=22.5+0.1=22.6

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