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5/9+1/6%1/4简便计算

5/9+1/6-1/4 =13/18-1/4 =17/36 你好,本题已解答,如果满意 请点右上角“采纳答案”。

以上

5/6x5/9+5/9x1/6 =5/9x(5/6+1/6) =5/9x1 =5/9

5/6-4/9+1/6-2/9 =(5/6+1/6)-(4/9+2/9) =1-6/9 =3/9 =1/3

原式=5/9-5/10+5/6 =5x(1/9-1/10+1/6) =5x(10/90-9/90+15/90) =5x8/45 =8/9

5/9×3/4+5/9×1/4 =5/9×(3/4+1/4) =5/9×1 =5/9

解: 〔1-(1/4 5/12)〕/1/9 =[1-(3/12+5/12)]*9 =[1-8/12]*9 =4/12*9 =3

5/9÷1/26+4/9×26 =5/9×26+4/9×26 =(5/9+4/9)×26 =1×26 =26

4/9+1/2+1/9+1/2 =(4/9+1/9)+(1/2+1/2) =5/9+1 =1又5/9 同分母相加减:分母不变,分子相加减。 异分母相加减:先通分,然后按 同分母相加减的计算法则进行计算。 此题可以简便运算,先运用加法交换律,再运用加法结合律。

5/9×79又6/17+50×1/9+11/9×5/17 =1/9×(5×79又6/17+50+11×5/17) =1/9×7650/17 =850/17=50 这道题就是把分母都是9的分数化成1/9×分子,然后运用乘法分配律进行运算.

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