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简便运算:一点五乘六又十二分之五加一又二分之一乘...

简便运算: 1.5×6又5/12+1又1/2×7/12-150% =1.5×(6又5/12+7/12-1) =1.5×6 =9

7.1

简便计算 1又2/5+5/12×8.4 =1.4+3.5 =4.9

2-1/2-1又1/2×0.5+5.6 =2-0.5-0.75+5.6 =6.35

+16又5/6 + (-23又1/6) =16又5/6 - 23又1/6 =16+ 5/6 - (23+ 1/6) =16 +5/6 - 23- 1/6 =(16-23)+(5/6 - 1/6) = -7 + 2/3 =-19/3 =-8又1/3

你好! 1.5×2.5+2.5×2.5 =(1.5+2.5)×2.5 =4×2.5 =10 如果对你有帮助望点右上角的采纳按钮

5╱6*5╱9+5╱9*1╱6=5╱9*(1╱6+5╱6)=5╱9*1=5╱9 提取公因式法:a*b+a*c=a*(b+c) 分数相乘法则:a╱b*c╱d=(a*c)╱(b*d)

(六分之五加四分之三)乘十二 =(5/6+3/4)×12 =5/6×12+3/4×12 =10+9 =19

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