2个回答
展开全部
3.78×99+3.78
=3.78×(99+1)
=3.78×100
=378
42.2×103
=42.2×(100+3)
=42.2×100+42.2×3
=4220+126.6
=4346.6
8.3×99
=8.3×(100-1)
=8.3×100-8.3
=830-8.3
=821.7
0.125×3.2×0.25
=0.125×8×(0.4×0.25)
=1×0.1
=0.1
=3.78×(99+1)
=3.78×100
=378
42.2×103
=42.2×(100+3)
=42.2×100+42.2×3
=4220+126.6
=4346.6
8.3×99
=8.3×(100-1)
=8.3×100-8.3
=830-8.3
=821.7
0.125×3.2×0.25
=0.125×8×(0.4×0.25)
=1×0.1
=0.1
本回答被提问者采纳
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询