这些奥数你会做吗?救命啊,快告诉我简便算法,我谢谢各位大虾了!673+298 354+299+397 = == == =

来源：学生作业帮编辑：神马作文网作业帮分类：数学作业时间：2024/11/18 09:09:05

这些奥数你会做吗?
救命啊,快告诉我简便算法,我谢谢各位大虾了!
673+298 354+299+397
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298+326+496 396+274
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3294+896 999+998+329
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99999+9999+999+99+9 653-498
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876-395-399 865-489
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379-299+3999-399 16633-706+4367
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3294-326+106-74 1361+972+639+28
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219+648+51-138-548-62 4536-（536-218）
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765-364+64 5328-（283-198）
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62.45÷0.25 91000÷125
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1÷32÷0.125÷0.25÷0.5 375÷25÷5
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本帅哥来回答!
673+298 354+299+397
=（673-2）+（298+2） =350+300+400
=671+300 =1050
=971
298+326+496 396+274
=300+320+500 =400+270
=1120 =670
3294+896 999+998+329
=3290+900 =1000+1000+326
=4190 = 2326
99999+9999+999+99+9 653-498
=100000+10000+1000+100+5 =655-500
=111105 =155
876-395-399 865-489
=882-800 =876-500
=82 =376
379-299+3999-399 16633-706+4367
=380-300+4000-400 =21000-706
=3680 =20294
3294-326+106-74 1361+972+639+28
=3200-220 =2000+1000
=2980 =3000
219+648+51-138-548-62 4536-（536-218）
=270-200+100 =4000-218
=170 =3782
765-364+64 5328-（283-198）
=765-300 =5330-100+13
=465 =5243
62.45÷0.25 91000÷125
=62.45*4 =91*8
=249.8 =728
1÷32÷0.125÷0.25÷0.5 375÷25÷5
=1*2 =375/125
=2 =3
容易,小菜一碟
虽然答得不算太好……

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