18.3×0.25+5.3÷0.4-7.13= 简便方法怎么算?谢谢

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18.3×0.25+5.3÷0.4-7.13=简便方法怎么算?谢谢18.3×0.25+5.3÷0.4-7.13=简便方法怎么算?谢谢18.3×0.25+5.3÷0.4-7.13=简便方法怎么算?谢谢1

18.3×0.25+5.3÷0.4-7.13= 简便方法怎么算?谢谢
18.3×0.25+5.3÷0.4-7.13= 简便方法怎么算?谢谢

18.3×0.25+5.3÷0.4-7.13= 简便方法怎么算?谢谢
18.3×0.25+5.3÷0.4-7.13
=18.3×0.25+5.3÷2/5-7.13
=18.3×0.25+5.3×5/2-7.13
=18.3×0.25+5.3×2.5-7.13
=1.83×2.5+5.3×2.5-7.13
=2.5×(1.83+5.3)-7.13
=2.5×7.13-7.13×1
=7.13×(2.5-1)
=7.13×1.5
=10.695