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3.6x十x二36.8

3.64x0.8+6.36x0.8-3.8 =(3.64+6.36)x0.8-3.8 =10x0.8-3.8 =8-3.8 =4.2

简便计算3.6x3.42+0.36x65.8 解: 3.6×3.42+0.36×65.8 =3.6×3.42+3.6×6.58 =3.6×(3.42+6.58) =3.6×10 =36

3.6+6.4×0.73 =3.6+6.4×1-6.4×0.27 =10-6.4×0.3+6.4×0.03 =10-1.92+0.192 =10.192-2+0.08 =8.2

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