简便计算:172.4乘6.2+2724乘0.38=?

简便计算:172.4乘6.2+2724乘0.38=?

解搏弯:172.4×6.2+2724×0.38
=颂纳172.4×6.2+272.4×3.8
=172.4×6.2+172.4×3.8+100×3.8
=172.4×(6.2+3.8)+380
=1724+野银没380
=2104
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