0.9999×1.3-0.1111×2.7 简便算法

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0.9999×1.3-0.1111×2.7 简便算法
0.9999×1.3-0.1111×2.7 简便算法

0.9999×1.3-0.1111×2.7 简便算法
0.9999×1.3-0.1111×2.7
=0.1111*(9*1.3-9*0.3)
=0.1111*9
=0.9999

0.9999×1.3-0.1111×2.7
=0.1111*(9*1.3-9*0.3)
=0.1111*9
=0.9999

0.9999×1.3-0.1111×2.7
= 0.9999×1.3-0.9999×0.3
= 0.9999×(1.3-0.3)
= 0.9999

0.9999×1.3-0.1111×2.7
=0.9999×1.3-0.1111×(9×0.3)
=0.9999×1.3-0.9999×0.3
=0.9999×(1.3-0.3)
=0.9999×1
=0.9999

0.9999×1.3-0.1111×2.7 (因为2.7=9×0.3)
=0.9999×1.3-0.1111×9×0.3
=0.9999×1.3-0.9999×0.3
=0.9999×(1.3-0.3)
=0.9999