99×79+99×27-99用脱式计算

2024-11-23 03:51:51
推荐回答(5个)
回答1:

回答2:

99×79+99×27-99
=99×(79+27-1)
=99×105
=(100-1)×105
=100×105-1×105
=10500-105

=10395

回答3:

=99x(79+27-1)
=99x105
=100x105-1x105
=10500-105
=10395

回答4:

=99✘(79+27-1)
=99✘105

回答5:

=99×(79+27-1)
=99×105
=100×105-105
=10500-105
=10395