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0.65+19.5*6.5简便计算

0.65+19.9*6.5 =6.5×0.1+19.9*6.5 =6.5×(19.9+0.1) =6.5×20 =130

0.65+19.9×6.5 =0.1×6.5+19.9×6.5 =(0.1+19.9)×6.5 =20×6.5 =130

6×(19×5)用简便计算 6×(19×5) =6×19×5 =6×5×19 =30×19 =570

6×(19×5)的简便计算 =6x5x19 =30x19 =30x20-30 =600-30 =570

25x19+ 19x6.5+ 19 =19x(25+6.5+1) =19x32.5 =32.5x(20-1) =650-32.5 =617.5

19.5+6.5×2+3.5 =(19.5+6.5)+(6.5+3.5) =26+10 =36

g

(25-19.6)/(0.5-0.35) =5.4÷0.15 =540÷15 =36 , 你好,本题已解答,如果满意 请点右下角“采纳答案”。

5.5x17.3+0.27x55 =55x(0.1x17.3+0.27) =55x2 =110

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