99乘以45加99乘以54减99怎么用简便方法算

2024-11-19 06:15:00
推荐回答(3个)
回答(1):

您好,很高兴为您解答:
99x45+99x54-99
=99x(45+54-1)
=99x98
=(100-1)x98
=9800-98
=9702

回答(2):

99x45+99x54-99
=99x(45+54-1)
=99x98
=(100-1)x98
=100x98-1x98
=9800-98
=9702

回答(3):

=99×(45+54-1)=99×98=(100-1)×98=9800-98=9702