用简便方法计算. (41.7+19.6+23.85)+(10.4+26.15) 0.125×32×2.5.
问题描述:
用简便方法计算.
(41.7+19.6+23.85)+(10.4+26.15)
0.125×32×2.5.
答
(41.7+19.6+23.85)+(10.4+26.15)
=(19.6+10.4)+(23.85+26.15)+41.7
=30+50+41.7
=121.7;
0.125×32×2.5
=(0.125×8)×(4×2.5)
=1×10
=10.