98+303用简便计算怎样算

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98+303用简便计算怎样算98+303用简便计算怎样算98+303用简便计算怎样算98+303=(100-2)+(300+3)=(100+300)+(3-2)=400+1=40198+303=100

98+303用简便计算怎样算
98+303用简便计算怎样算

98+303用简便计算怎样算
98+303=(100-2)+(300+3)=(100+300)+(3-2)=400+1=401

98+303=100-2+303=100+301=401

98+303
=(98+2)+(303-2)
= 100+301
= 401