0.25×0.25×0.75×0.75的简便计算

2025-03-31 21:21:39
推荐回答(2个)
回答1:

主要利用0.25X4=1
原式=0.25^4 X9
=0.25^4 X4^4 X9/(4^4)
=9/4^4
=9/256

回答2:

0.25×0.25×0.75×0.75
=1/4x1/4x3/4x3/4
=9/(16x16)
=9/256
=256分之9