四年级简便运算带答案

2024-12-28 13:46:12
推荐回答(1个)
回答1:

四年级简便运算带答案
4×3.78×0.25
=4×0.25×3.78
=1×3.78
=3.78
125×246×0.8
=125×0.8×246
=100×246
=24600