奥数题 0.5×0.32×1.25×0.025×0.2 明写过程,谢谢
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解决时间 2021-11-07 23:59
- 提问者网友:骨子里的高雅
- 2021-11-07 13:28
奥数题 0.5×0.32×1.25×0.025×0.2 明写过程,谢谢
最佳答案
- 五星知识达人网友:街头电车
- 2021-11-07 13:50
其实,在乘法运算中,有些数也是可以组成朋友的,比如2和5,乘积椒10;4肯25,乘积是100,8和125,乘积是1000等,此题已经有2与5(不考虑小数点),125与25缺少8和4,而恰好有32可以分成8和4,所以0.5x0.32x1.25x0.025x0.2=(0.5x0.2)x(0.8x1.25)x(0.4x0.025)=0.1x1x0.01=0.001。
全部回答
- 1楼网友:白昼之月
- 2021-11-07 17:16
解:原式=0.5×0.4 ×0.8×1.25×0.5×0.05×0.2
=0.2×1×0.1×0.05
=0.2×0.005
=0.001
=0.2×1×0.1×0.05
=0.2×0.005
=0.001
- 2楼网友:何以畏孤独
- 2021-11-07 15:53
原式
=0.5×0.2×0.8×1.25×0.4×0.025
=0.1×1×0.01
=0.001
=0.5×0.2×0.8×1.25×0.4×0.025
=0.1×1×0.01
=0.001
- 3楼网友:几近狂妄
- 2021-11-07 14:17
0.5x0.32x1.25x0.025x0.2
=0.5x0.4x0.8x1.25x0.025x0.2
=(0.5x0.2)x(0.4x0.025)x(0.8x1.25)
=0.1x0.01x1
=0.001
=0.5x0.4x0.8x1.25x0.025x0.2
=(0.5x0.2)x(0.4x0.025)x(0.8x1.25)
=0.1x0.01x1
=0.001
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