Question

999.9ⅹ0.9+0.3333x150怎么简便计算？

Answer 1

我们可以看到0.3333成3恰好与999.9这个数类似，可以提取公因式，所以，将0.3333×150转化成0.9999×50
999.9×0.9+0.3333×150
=999.9×0.9+0.9999×50
=999.9×0.9+999.9×0.05
=999.9×（0.9+0.05）
=（1000-0.1）×0.95
=1000×0.95-0.1×0.95
=950-0.095
=949.905

Answer 2

999.9ⅹ0.9+0.3333x150怎么简便计算？
999.9ⅹ0.9+0.3333x150
=33.33x(27+1.5)
=33.33x(30-1-0.5)
=999.9-33.33-16.665
=999.9-49.995
=999.9-50+0.005
=949.905

Answer 3

999.9ⅹ0.9+0.3333x150
=0.9999ⅹ900+0.9999ⅹ50
=0.9999ⅹ（900+50）
=（1-0.0001）ⅹ950
=950-0.095
=949.905