计算,能简算的一定要简算.①5.81+8.3+4.19+11.7; &n...
计算,能简算的一定要简算.①5.81+8.3+4.19+11.7;②18.5-3.21-4.79;③0.25×17.3×0.4;④3.54×0.29-0.29×2.54....
计算,能简算的一定要简算.①5.81+8.3+4.19+11.7; ②18.5-3.21-4.79;③0.25×17.3×0.4; ④3.54×0.29-0.29×2.54.
展开
展开全部
①5.81+8.3+4.19+11.7
=5.81+4.19+(8.3+11.7)
=10+20
=30;
②18.5-3.21-4.79
=18.5-(3.21+4.79)
=18.5-8
=10.5;
③0.25×17.3×0.4;
=0.25×0.4×17.3
=0.1×17.3
=1.73;
④3.54×0.29-0.29×2.54
=0.29×(3.54-2.54)
=0.29×1
=0.29.
=5.81+4.19+(8.3+11.7)
=10+20
=30;
②18.5-3.21-4.79
=18.5-(3.21+4.79)
=18.5-8
=10.5;
③0.25×17.3×0.4;
=0.25×0.4×17.3
=0.1×17.3
=1.73;
④3.54×0.29-0.29×2.54
=0.29×(3.54-2.54)
=0.29×1
=0.29.
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