69×34+31×35的简算怎么简算？

Question

如题所述

Answer 1

69×34+31×35
＝69×(35－1)+31×35
＝69×35－69+31×35
＝(69+31)×35－69
＝100×35－69
＝3500－69
＝3431

Answer 2

解：原式=69x34+31x(34+1)
=69X34十31x34十31
=34x(69+31)+31
=34x100+31
=3400+31
=3431

Answer 3

69×34+31×35=69*（35-1）+31*35
=69*35-69+31*35
=35*（69+31）-69
=35*100-69
=3500-69
=3431