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0.58 1.2 0.49简便计算

0.58*1.2+0.49的简便运算=0.58+0.58x0.2+0.5-0.01=0.58+0.116+0.5-0.01=0.58+0.5+(0.116-0.01)=1.08+0.106=1.186

1.186解析: 0.58*1.2+0.49 =0.58*(1+0.2)+0.49 =0.58+0.116+0.49 =0.6-0.02+0.116+0.50-0.01 =1.1+0.116-0.03 =1.1+0.086 =1.186

1.186

0.58x1.2+0.49=0.58+0.116+0.49=0.58+0.606=1.186

解;原式=0.58x1.2x0.49=0.34104.

简便计算如下,使用拆分法,将1.2转化为1+0.2,原式=0.58*(1+0.2)+0.49=0.58+0.116+0.49=10.186

0.58乘以1.2 0点49的简便方法0.58乘以1.2 0点49=0.696+0.49=1.186

0.58*12 0.49的脱式算0.58*12 0.49=6.96+0.49=7.45直接计算

0.45x1.2x2=0.45x2x1.2=0.9x(1+0.2)=0.9x1+0.9x0.2=0.9+0.18=1.08

0.58x16=5.8*1.6=6*1.6- 0.2*1.6=9.6- 0.32=9.28

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