问题 解答题

99+11×19+11×80______.

答案

99+11×19+11×80

=99+(19+80)×11,

=99+99×11,

=(11+1)×99,

=12×(100-1),

=12×100-12.,

=1200-12,

=1188.

故答案为:1188.

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