计算下列各题，怎样简便就怎样算
答案:2 悬赏:80 手机版
解决时间 2021-02-11 21:00
- 提问者网友：浪荡绅士
- 2021-02-11 07:37
计算下列各题，怎样简便就怎样算
最佳答案
- 五星知识达人网友：过活
- 2021-02-11 09:09
1、4.73+9+27%-4
=4.73+9+0.27-4
=（4.73+0.27）+（9-4）
=5+5
=10
2、1/4×17/53+36/53×25%
=25%×17/53+36/53×25%
=25%×（17/53+36/53)
=25%×1
=25%=0.25
3、2/9×3/8+0.375+7/9×37.5%
=2/9×0.375+0.375+7/9×0.375
=0.375×（2/9+1+7/9)
=0.375×2
=0.75
4、2.5×1/5+0.35×20%
=2.5×20%+0.35×20%
=（2.5+0.35）×20%
=2.85×20%
=2.85×0.2
=0.57
=4.73+9+0.27-4
=（4.73+0.27）+（9-4）
=5+5
=10
2、1/4×17/53+36/53×25%
=25%×17/53+36/53×25%
=25%×（17/53+36/53)
=25%×1
=25%=0.25
3、2/9×3/8+0.375+7/9×37.5%
=2/9×0.375+0.375+7/9×0.375
=0.375×（2/9+1+7/9)
=0.375×2
=0.75
4、2.5×1/5+0.35×20%
=2.5×20%+0.35×20%
=（2.5+0.35）×20%
=2.85×20%
=2.85×0.2
=0.57
全部回答
- 1楼网友：骨子里都是戏
- 2021-02-11 10:08
1
4.73+9+27%-4
=4.73+9+0.27-4
=4.73+0.27+9-4
=5+9-4
=14-4
=10
2
1/4*17/53+36/53*25%
=1/4*17/53+36/53*1/4
=1/4*(17/53+36/53)
=1/4*1
=1
3
2/9*3/8+0.375+7/9*37.5%
=2/9*3/8+3/8+7/9*3/8
=(2/9+7/9)*3/8+3/8
=1*3/8+3/8
=3/8+3/8
=3/4
4
25*1/5+0.35*20%
=2.5*0.2+0.35*0.2
=(2.5+0.35)*0.2
=2.85*0.2
=0.57
4.73+9+27%-4
=4.73+9+0.27-4
=4.73+0.27+9-4
=5+9-4
=14-4
=10
2
1/4*17/53+36/53*25%
=1/4*17/53+36/53*1/4
=1/4*(17/53+36/53)
=1/4*1
=1
3
2/9*3/8+0.375+7/9*37.5%
=2/9*3/8+3/8+7/9*3/8
=(2/9+7/9)*3/8+3/8
=1*3/8+3/8
=3/8+3/8
=3/4
4
25*1/5+0.35*20%
=2.5*0.2+0.35*0.2
=(2.5+0.35)*0.2
=2.85*0.2
=0.57
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