一年级数学两位数减法有效的简易方法(讲义)

一年级数学两位数减法最有效的简易方法(讲义)一年级数学两位数减法最有效的简易方法(讲义)一年级数学两位数减法最有效的简易方法(讲义)资料仅供参考文件编号：2022年4月一年级数学两位数减法最有效的简易方法(讲义)版本号：A修改号：1页次：1.0审核：批准:发布日期：一年级数学两位数加减最容易掌握技巧方法一：【加法】1，数位要认知清楚，两位数的加减，要记住个位与十位标清楚；2，满十要进一，这是重点知识；方法二：【减法】1，两位数的减法，要记住个位与十位的分开；2，两位数减两位数，首先被减数个位比减数的个位差几，记得向十位借一；3，差几口诀：差1得9；差2得8；差3得7；差4得6；差5得5；差6得4；差7得3；差8得2；差9得1；【温馨提醒】口诀要熟练，要比较，减法掌握就非常简单了！！（领悟一下）193736824358+71+57+47-76-14-29 577111952996-18-54+89-49+49-47585229173362-29+29+45+56+58+28726971264743-65+27+19-19-38-18581368975998-39+67-39-58+15-49561861631394-39+74-22-28+38-39422797936146-23-18-58-28-28+15323894611127-18+51-66+29+69+66574461977832-28-29+19-18-69+49195777697722+59-28-19+17-68+46584225636698+29+29+68+19+26-69443371733929+29+39-64-54+33+57434887831994-15+22-38-35+63-27264621755557+64-27-12-39--38+33476774644729+48+14+19-18+27+61872621774687-38+46-19--48+34-69429662542526+38-39+18+26-18+47337577198828+38-56-59+64-29+68539686616539+37-19-37+29+35+27281728218427+66+67-19-12+16+35292224177563+51-13+48+78-66+19337428534951+38+16+34+19+23+19434553643837+19-27-39-25+27-18266624263238+44+29-18-17-19-29164847369574+76-19-38-27-36-37553316597431+29-16+25+11-56-15677614494696-48-19+77+47-28-39959657195265-78-87-48+43-28+26382918276166+54+35+12-19-37-57357253284894+57-33-18+71+36-47266393691256+28+19-57+26+79+24289793655492+64-88-69+27+19-58428622447596-26-67+19+27+16-28262257555775-19-16+26-19+34+16264917424552+67+19+58+48+36+28981625388755-29+74-19+44-29--49765656775846+14+24-47+16-29+34675822818865-59+13-19-33--49--38152119141987+79-14+78+79 +42-182539 29355618+68+51+65-17-37+77573822936715+33+54-18-19-28+79192362446252+73-19-36-26+28-14533865479148-27-29-27-18--47+12488483236294+43-75-39+28-59-35937321625242-38+18-14--24+19+28124871344234+38-19+19+59+19-25778295543655+19-48-37--29-17-26733851316922-65--19-24+59+19+29743924221849+18+11-18+39+25+11527338567365-43+18+45+18-45+17411633476243-25+77-17-19+28+49432329873768-34+38+18+16+16+19673431972324-59+56-22-39-15+36379233224725-18--35-17--17+24+66451956331561-19+77-37--18+29-34234153555919-17--21-48+26+37+46585972753924-29+23-26--59+32+56985858544437-39+22-39+28+48+57272363225888+35-18-55--13-29--79645121592515+17-49-14+11--16+57688559299823-29-78+22+51-39-18715485457281-53--35-77--29-35--38472117338237-19+29+46+47-35+57284132692294+34-25--17+29+49-56389247435646-19--28-28--18-28-27316717758545-22--59+49-27--69-26434845171933-25--19-27+66+31+39367852553235+29-59--26-36+59+47362771673922+45+44-27--38+51+28511822455568+39+65+48-28-38--39291829459425+48+64+61-18--39-16476678691917-18+24-49+27+68+73662188464327-58+19--39+27+27+54752526878364-57--17+68-59--64+16333665385367+48-28-36+56-28-59215232651759-13--24+38-26+65+23666537245788-38+25+26+48+29-49575334853398-48+17-29--58+37-59561861631394-39+74-22-28+38-39688559299823-29-78+22+51-39-18266393691256+28+19-57+26+79+24289793655492+64-88-69+27+19-58428622447596-26-67+19+27+16-28262257555775-19-16+26-19+34+16264917424552+67+19+58+48+36+289