27.9+3.6×2.5÷0.48=简便方法
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27.9+3.6×2.5÷0.48=简便方法
27.9+3.6×2.5÷0.48
=27.9+0.4×3×3×2.5÷0.16÷3
=27.9+0.4×2.5×3÷0.16
=27.9+3÷0.16
=27.9+300÷16
=27.9+18.75
=46.65
=27.9+0.4×3×3×2.5÷0.16÷3
=27.9+0.4×2.5×3÷0.16
=27.9+3÷0.16
=27.9+300÷16
=27.9+18.75
=46.65