2.8x23.4+11.1x57.6+6.54x28简算

2025-06-22 18:41:10
推荐回答(1个)
回答1:

2.8*(23.4+65.4)+11.1*57.6
=2.8*88.8+11.1*8*7.2
=2.8*88.8+88.8*7.2
=88.8*(2.8+7.2)
=88.8*10
=888
有用就请采纳吧 谢谢