65x45+45x34+65脱式简便运算

65x45+45x34+65脱式简便运算
2025-03-04 16:03:55
推荐回答(1个)
回答1:

65x45+45x34+65

=65x45+45x35-45+65
=(65+35)x45-45+65
=100x45+(65-45)
=4500+20
=4520