13.9×5.43+13.9×5.43简便计算
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13.9×5.43+13.9×5.43简便计算13.9×5.43+13.9×5.43简便计算13.9×5.43+13.9×5.43简便计算13.9×5.43+13.9×5.43=2×(13.9×5.4
13.9×5.43+13.9×5.43简便计算
13.9×5.43+13.9×5.43
简便计算
13.9×5.43+13.9×5.43简便计算
13.9×5.43+13.9×5.43
=2×(13.9×5.43)
=2×13.9×5.43
=27.8×5.43
=120.954
或者
13.9×5.43+13.9×5.43
=13.9×(5.43+5.43)
=13.9×10.86
=150.954
13.9*(5.43+5.43)
13.9×(5.43+5.43)=13.9×10.86=150.954
13.9x(5.43+5.43)
=13.9x10.86
=150.954
13.9乘5.43乘2
13.9x(5.43+5.43)
=13.9x10.86
=150.954
请采纳
13.9提出来
=13.9*(5.43+5.43)
=150.954
13.9×5.43+13.9×5.43简便计算
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