发布网友 发布时间:2022-04-23 18:11
共4个回答
热心网友 时间:2023-09-14 13:38
85÷3.1×0.62×1.4÷0.17×4
=(85÷0.17)×(0.62÷3.1)×1.4×4
=(85÷100÷0.17)×(0.62×10÷3.1)×1.4×4×10
=5×2×1.4×4×10
=14×4×10
=560
7.8×1.001×6.28÷(18.2×0.26×0.125)
=7.8×1.001×6.28÷18.2÷0.26÷0.125
=(7.8÷0.26)×1.001×6.28÷18.2÷0.125
=(7.8÷0.26)×(11÷2×0.182)÷18.2÷0.125×6.28
=(7.8÷0.26)×(11÷2×0.182÷18.2)÷0.125×6.28
=(7.8÷0.26)×(11÷2×0.182÷18.2)×8×6.28
=30×0.055×8×6.28
=82.6
0.68÷7.6×5.7÷0.85×52÷6.5
=(0.68÷0.85)×(5.7÷7.6)×(52÷6.5)
=[(0.17×4)÷(0.17×5)]×[(1.9×3)÷(1.9×4)]×[(13×4)÷(13×0.5)]
=(4÷5)×(3÷4)×(4÷0.5)
=4.8
热心网友 时间:2023-09-14 13:38
把乘数作为分子,除数作为分母,然后进行公约数化简
如85÷3.1×0.62×1.4÷0.17×4
就是(85×0.62×1.4)÷(3.1×0.17)
0.62可以约掉3.1得0.2,85可以约掉0.17得500,所以可以得到500×0.2×1.4=140
热心网友 时间:2023-09-14 13:39
NC题目。。。
1、 原式=(85/0.17)×(0.62/3.1)×1.4×4
=500×(1/5)×(7/5)×4
=100/5×28
=560
2、 原式=(39/5)×(1001/1000)×(157/25)/【(91/5)×(13/50)×(1/8)】=(39×1001×157×5×50×8)/(5×1000×25×91×13)
=(48×157×1001)/(91000)
=7543536/91000
=942942/11375
热心网友 时间:2023-09-14 13:40
(85/0.17)*(0.62/3.1)*1.4*4=500*0.2*1.4*4=560