8.59-4.1×0.9-4.49怎样简便运算?
3个回答
展开全部
8.59-4.41×0.9-4.49
=(8.59-4.49)-4.41×1+4.41×0.1
=4.1-4.41+0.441
=4.541-4.41
=0.131
=(8.59-4.49)-4.41×1+4.41×0.1
=4.1-4.41+0.441
=4.541-4.41
=0.131
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展开全部
8.59一4.1×0.9一4.49
=8.59一3.69一4.49
=8.59一4.49一3.69
=4.1一3.69
=0.41
=8.59一3.69一4.49
=8.59一4.49一3.69
=4.1一3.69
=0.41
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