6.1+3.9x5.4+46用简便方法怎么做
1个回答
2014-12-28
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6.1+3.9x5.4+46
=6.1+3.9+4.4×3.9+46
=56+4.4×4-0.44
=56+17.6-0.44
=73.6-0.44
=73.16
=6.1+3.9+4.4×3.9+46
=56+4.4×4-0.44
=56+17.6-0.44
=73.6-0.44
=73.16
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