零点一二五乘五加零点六二五乘五加零点一二五乘五详细解答啊

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零点一二五乘五加零点六二五乘五加零点一二五乘五详细解答啊
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零点一二五乘五加零点六二五乘五加零点一二五乘五详细解答啊
零点一二五乘五加零点六二五乘五加零点一二五乘五详细解答啊

零点一二五乘五加零点六二五乘五加零点一二五乘五详细解答啊
=0.125×5+0.625×5+0.125×5
=(0.125+0.125+0.625)×5
=0.875×5
=4.375