1240x3.5+124x51+1.24x1400用简便方法计算

问题描述:

1240x3.5+124x51+1.24x1400用简便方法计算

1240x3.5+124x51+1.24x1400
=124*35+124*51+124*14
=124(35+51+14)
=124*100
=12400