373-129+29 860-168+159 400/25*75 189-(89+74) 请用简便方法计算要过程哦!
展开全部
373-129+29
=373-100
=273
860-168+159
=860-100+100-68+59
=860-9
=851
400/25*75
=400*75/25
=400*3
=1200
189-(89+74)
=189-89-74
=100-74
=26
=373-100
=273
860-168+159
=860-100+100-68+59
=860-9
=851
400/25*75
=400*75/25
=400*3
=1200
189-(89+74)
=189-89-74
=100-74
=26
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展开全部
373-129+29
=373-(129-29)
=373-100
=273
860-168+159
= 860-(160+8)+(160-1)
= 860-160-8+160-1
= 860-8-1
= 860-9
=851
400/25*75
=400/25*25*3
=400*3
=1200
189-(89+74)
= 189-89-74
= 100-74
=26
=373-(129-29)
=373-100
=273
860-168+159
= 860-(160+8)+(160-1)
= 860-160-8+160-1
= 860-8-1
= 860-9
=851
400/25*75
=400/25*25*3
=400*3
=1200
189-(89+74)
= 189-89-74
= 100-74
=26
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展开全部
373-129+29 =373-(129-29)=373-100=273
860-168+159 =860-160+159-8=700+151=851
400/25*75 =400*(75/25)=1200
189-(89+74)=189-89-74=26
860-168+159 =860-160+159-8=700+151=851
400/25*75 =400*(75/25)=1200
189-(89+74)=189-89-74=26
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