41.2×8.1+11×1.25+53.7×1.9=(要求简便计算)

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41.2×8.1+11×1.25+53.7×1.9=(要求简便计算)41.2×8.1+11×1.25+53.7×1.9=(要求简便计算)41.2×8.1+11×1.25+53.7×1.9=(要求简便计

41.2×8.1+11×1.25+53.7×1.9=(要求简便计算)
41.2×8.1+11×1.25+53.7×1.9=
(要求简便计算)

41.2×8.1+11×1.25+53.7×1.9=(要求简便计算)
41.2×8.1+11×1.25+53.7×1.9
=41.2*(8+0.1)+12.5+1.25+53.7*(2-0.1)
=329.6+4.12+12.5+1.25+107.4-5.37
=449.5+4.12+1.25-5.37
=449.5+0
=449.5

449.5

41.2×8.1+11×1.25+53.7×1.9
=333.72+13.75+102.03
=449.5