用简便方法计算0.666×0.7+0.222×7.9?

2025-06-26 15:54:40
推荐回答(1个)
回答1:

0.666×0.7+0.222×7.9简便计算?
解:原式=0.222×3×0.7+0.222×7.9
=0.222×(2.1+7.9)
=0.222×10
=2.22