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.
3.5×0.8+5.5×80%+0.8.
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.