4.06*14.8-48*0.406
=4.06*14.8-4.8*4.06
=4.06*(14.8-4.8)
=4.06*10
=40.6
请参考
4.06×14.8-48×0.406
=4.06×14.8-4.8×4.06
=(14.8-4.8)×4.06
=10×4.06
=40.6
简便运算如下:
4.06×14.8-48×0.406
=(0.406×10)×14.8-0.406×48
=0.406×(10×14.8)-0.406×48
=0.406×148-0.406×48
=0.406×(148-48)
=40.6
原式=4.06×14.8 - 48×4.06×0.1
=4.06×14.8 - 4.8×4.06
=4.06×(14.8 - 4.8)
=4.06×10
=40.6