(0.97+0.97*2+0.97)*2.5(简算)
问题描述:
(0.97+0.97*2+0.97)*2.5(简算)
答
(0.97+0.97*2+0.97)*2.5
=(0.97*4)*2.5
=0.97*(4*2.5)
=0.97*10
=9.7