如题所述
第1个回答 2016-04-01
=69×(100+1)
=69×100+69×1
=6900+69
=6969
=69×100+69×1
=6900+69
=6969
第2个回答 2016-04-01
=69×100+69
=6900+69
=6969
=6900+69
=6969
第3个回答 2016-04-01
69x101
=69*(100+1)
=6900+69
=6969追问
=69*(100+1)
=6900+69
=6969追问
谢谢
本回答被提问者采纳第4个回答 2023-03-05
69×101
=69×(100+1)
=69×100+69×1
=6900+69
=6969
=69×(100+1)
=69×100+69×1
=6900+69
=6969
第5个回答 2016-04-01
69×101
=(70-1)×(100+1)
=70×100+70-100-1
=6969
=(70-1)×(100+1)
=70×100+70-100-1
=6969