15.6-4.47-5.53+6.4.用简便方法计算
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15.6-4.47-5.53+6.4.用简便方法计算15.6-4.47-5.53+6.4.用简便方法计算15.6-4.47-5.53+6.4.用简便方法计算15.6-4.47-5.53+6.4=15.
15.6-4.47-5.53+6.4.用简便方法计算
15.6-4.47-5.53+6.4.用简便方法计算
15.6-4.47-5.53+6.4.用简便方法计算
15.6-4.47-5.53+6.4
=15.6+6.4-(4.47+5.53)
=22-10
=12
15.6-4.47-5.53+6.4.用简便方法计算
5.53乘7.9+3.1乘5.53-5.
用简便方法计算 4.37+15.6×0.32
用简便方法计算: 15.6×13.1+15.6×6.9 = =用简便方法计算: 15.6×13.1+15.6×6.9 = = =
5.53乘8+0.6乘5.53+5.53乘1.4简便算
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6.4×2.5×1.25用简便方法计算
15.6×23.1+15.6-15.6×12.1简便运算
15.6×23.1+15.6-15.6×12.1简便运算
15.6×101-15.6简便方法
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3.39+4.47+3.51-2.38+4.53-2.62简便
17.82+4.47-6.83+3.53的简便算法
3.39+4.47+3.51-2.38+4.53-2.62