
展开全部
简便计算
32.6×54.9+41.5×67.4+67.4×13.4
=32.6×54.9+(41.5+13.4)×67.4
=32.6x54.9+54.9x67.4
=(32.6+67.4)×54.9
=100x54.9
= 5490
32.6×54.9+41.5×67.4+67.4×13.4
=32.6×54.9+(41.5+13.4)×67.4
=32.6x54.9+54.9x67.4
=(32.6+67.4)×54.9
=100x54.9
= 5490
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