写6个用简便方法计算的算式
答案:2 悬赏:50 手机版
解决时间 2021-02-08 15:59
- 提问者网友：最美的风景
- 2021-02-08 08:56
写6个用简便方法计算的算式
最佳答案
- 五星知识达人网友：过活
- 2021-02-08 09:57
212+198
=(200+12)+(100+98)
=200+12+100+98
=12+98+100+200
=110+100+200
=410
13.75-(3.75+6.48)
=13.75-3.75-6.48
=10-6.48
=3.52
(0.75*42.7+57.3-0.573*25)/3*7972
=(0.75*42.7+57.3*1-57.3*0.25)/3*7972
=[0.75*42.7+57.3(1-0.25)]/3*7972
=[0.75*42.7+57.3*0.75]/3*7972
=[(42.7+57.3)*0.75]/3*7972
=75/3*7972
=25*7972
=199300
3.45*0.6*2.8=3.45×2.8×0.6=5.796
4.02+5.4+0.98
=4.02+0.98+5.4
=5+5.4
=10.4
5.17-1.8-3.2
=5.17-(1.8+3.2)
=5.17-5
=0.17
13.75-(3.75+6.48)
=13.75-3.75-6.48
=3.52
33*145+33*55
=(145+55)*33
=200*33
=6600
希望帮到你 望采纳 谢谢 加油
=(200+12)+(100+98)
=200+12+100+98
=12+98+100+200
=110+100+200
=410
13.75-(3.75+6.48)
=13.75-3.75-6.48
=10-6.48
=3.52
(0.75*42.7+57.3-0.573*25)/3*7972
=(0.75*42.7+57.3*1-57.3*0.25)/3*7972
=[0.75*42.7+57.3(1-0.25)]/3*7972
=[0.75*42.7+57.3*0.75]/3*7972
=[(42.7+57.3)*0.75]/3*7972
=75/3*7972
=25*7972
=199300
3.45*0.6*2.8=3.45×2.8×0.6=5.796
4.02+5.4+0.98
=4.02+0.98+5.4
=5+5.4
=10.4
5.17-1.8-3.2
=5.17-(1.8+3.2)
=5.17-5
=0.17
13.75-(3.75+6.48)
=13.75-3.75-6.48
=3.52
33*145+33*55
=(145+55)*33
=200*33
=6600
希望帮到你 望采纳 谢谢 加油
全部回答
- 1楼网友：雪起风沙痕
- 2021-02-08 10:47
1、368＋2649＋1351
2、 89＋101＋
2、 89＋101＋
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