14.5×0.1+1.45×9的简便算法

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14.5×0.1+1.45×9的简便算法
14.5×0.1+1.45×9的简便算法

14.5×0.1+1.45×9的简便算法
14.5×0.1+1.45×9
=1.45×(1+9)
=1.45×10
=14.5

14.5×(0.1+0.9)=14.5

14.5×0.1+1.45×9
=1.45×1+1.45×9
=1.45×(1+9)
=1.45×10
=14.5

14.5×0.1+1.45×9
=1.45x1+1.45x9
=1.45x(1+9)
=1.45X10
=14.5

14.5×0.1+1.45×9
=14.5×0.1+14.5×0.9
=14.5×(0.1+0.9)
=14.5

14.5×0.1+1.45×9
=14.5x0.1+14.5x0.9
=14.5x(0.1+0.9)
=14.5x1
=14.5