11相关链接练习设计第11题答案
(1)1.64×81%+1.64×19%
=1.64×(81%+19%)
=1.64×100%
=1.64
(3)77.5×0.125+0.25×1.25
=77.5×0.125+2.5×0.125
=0.125×(77.5+2.5)
=0.125×80
=10
12相关链接练习设计第12题答案
13相关链接练习设计第13题答案