怎样计算简便就怎样算:53.85-(4.13+3.85) 1.28×8.5+0.72×8.5 25×0.32×1.25 40.8÷(41.5-7.5×5
怎样计算简便就怎样算:53.85-(4.13+3.85)1.28×8.5+0.72×8.525×0.32×1.2540.8÷(41.5-7.5×5)28.6×10.1[8...
怎样计算简便就怎样算:53.85-(4.13+3.85) 1.28×8.5+0.72×8.5 25×0.32×1.25 40.8÷(41.5-7.5×5) 28.6×10.1 [8.85-(1.5+3.75)]÷1.8.
展开
1个回答
展开全部
(1)53.85-(4.13+3.85)
=53.85-4.13-3.85
=(53.85-3.85)-4.13
=50-4.13
=45.87;
(2)1.28×8.5+0.72×8.5
=(1.28+0.72)×8.5
=2×8.5
=17;
(3)25×0.32×1.25
=25×0.4×0.8×1.25
=(25×0.4)×(0.8×1.25)
=10×1
=10;
(4)40.8÷(41.5-7.5×5)
=40.8÷(41.5-37.5)
=40.8÷4
=10.2;
(5)28.6×10.1
=28.6×(10+0.1)
=28.6×10+0.1×28.6
=286+2.86
=288.86;
(6)[8.85-(1.5+3.75)]÷1.8
=[8.85-5.25]÷1.8
=3.6÷1.8
=2.
=53.85-4.13-3.85
=(53.85-3.85)-4.13
=50-4.13
=45.87;
(2)1.28×8.5+0.72×8.5
=(1.28+0.72)×8.5
=2×8.5
=17;
(3)25×0.32×1.25
=25×0.4×0.8×1.25
=(25×0.4)×(0.8×1.25)
=10×1
=10;
(4)40.8÷(41.5-7.5×5)
=40.8÷(41.5-37.5)
=40.8÷4
=10.2;
(5)28.6×10.1
=28.6×(10+0.1)
=28.6×10+0.1×28.6
=286+2.86
=288.86;
(6)[8.85-(1.5+3.75)]÷1.8
=[8.85-5.25]÷1.8
=3.6÷1.8
=2.
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