5/9×5/6+4/9÷6/5运用简便方法计算,如果不行不用,简便方法?
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原式=5/9x5/6+4/9Ⅹ5/6
=5/6x(5/9+4/9)
=5/6x1
=5/6
=5/6x(5/9+4/9)
=5/6x1
=5/6
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5/9×5/6+4/9÷6/5
=5/9×5/6+4/9×5/6
=5/6×(5/9+4/9)
=5/6
=5/9×5/6+4/9×5/6
=5/6×(5/9+4/9)
=5/6
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展开全部
5/9×5/6+4/9÷6/5
=5/9×5/6+4/9×5/6
=(5/9+4/9)×5/6
=5/6
=5/9×5/6+4/9×5/6
=(5/9+4/9)×5/6
=5/6
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