问题 解答题

3.5×0.8+5.5×80%+0.8.

答案

3.5×0.8+5.5×80%+0.8,

=3.5×0.8+5.5×0.8+0.8×1,

=(3.5+5.5+1)×0.8,

=10×0.8,

=8.

单项选择题
单项选择题