下面各题,怎样简便就怎样算.3.28*5.7+6.72*5.7

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下面各题,怎样简便就怎样算.3.28*5.7+6.72*5.7下面各题,怎样简便就怎样算.3.28*5.7+6.72*5.7下面各题,怎样简便就怎样算.3.28*5.7+6.72*5.73.28*5.

下面各题,怎样简便就怎样算.3.28*5.7+6.72*5.7
下面各题,怎样简便就怎样算.3.28*5.7+6.72*5.7

下面各题,怎样简便就怎样算.3.28*5.7+6.72*5.7
3.28*5.7+6.72*5.7
=(3.28+6.72)*5.7
=10*5.7
=57

3.28*5.7+6.72*5.7
=5.7*(3.28+6.72)
=5.7*10
=57

3.28*5.7+6.72*5.7
=(3.28+6.72)*5.7
=10*5.7
=57