65乘65简便方法计算
第1个回答 2016-03-08
65乘65简便方法计算
65乘65
=65*(60+5)
=65*60+65*5
=4225本回答被网友采纳
65乘65
=65*(60+5)
=65*60+65*5
=4225本回答被网友采纳
第2个回答 2016-03-08
65×65
=(60+5)²
=60²+2×60×5+5²
=3600+600+25
=4200+25
=4225
=(60+5)²
=60²+2×60×5+5²
=3600+600+25
=4200+25
=4225
第3个回答 2020-02-04
(6+1)×6×100+25=4225