進(jìn)位加法速算口訣88+7=加七口訣:進(jìn)一減三88+7=88+10-3=9588+7=?進(jìn)一9減三5進(jìn)位加法速算口訣88+7=加七口訣:進(jìn)一減三88+7=88+進(jìn)位加法口訣：進(jìn)一減補(bǔ)9+1，進(jìn)1減9，等于10。9+2，進(jìn)1減8，等于11。9+3，進(jìn)1減7，等于12。9+4，進(jìn)1減6，等于13。9+5，進(jìn)1減5，等于14。9+6，進(jìn)1減4，等于15。9+7，進(jìn)1減3，等于16。9+8，進(jìn)1減2，等于17。9+9，進(jìn)1減1，等于18。進(jìn)一減幾?進(jìn)位加法口訣：進(jìn)一減補(bǔ)進(jìn)一減幾?進(jìn)位加法口訣：進(jìn)一減補(bǔ)39+1，進(jìn)1減9，等于40。39+2，進(jìn)1減8，等于41。39+3，進(jìn)1減7，等于42。39+4，進(jìn)1減6，等于43。39+5，進(jìn)1減5，等于44。39+6，進(jìn)1減4，等于45。39+7，進(jìn)1減3，等于46。39+8，進(jìn)1減2，等于47。39+9，進(jìn)1減1，等于48。進(jìn)一減幾?進(jìn)位加法口訣：進(jìn)一減補(bǔ)進(jìn)一減幾?算理:27+8=27+10-2借助加8口訣直接寫出結(jié)果:27+8=加8口訣:進(jìn)一減二10-2+37353527+8=進(jìn)一3減二58看成10-2算理:27+8=27+10-2借助加8口訣27+8=加8口訣進(jìn)位加1口訣:進(jìn)一減九加數(shù)91929394959697989加數(shù)111111111和102030405060708090進(jìn)位加1口訣:進(jìn)一減九加數(shù)91929394959697989??進(jìn)位加2口訣:進(jìn)一減八加數(shù)81928394859687989加數(shù)222222222和10213041506170819139+2=78+2=89+2=48+2=18+2=29+2=58+2=39+2=減八4180進(jìn)一915020316041??進(jìn)位加2口訣:進(jìn)一減八加數(shù)81928394859687進(jìn)位加3口訣:進(jìn)一減七加數(shù)81928394859687987加數(shù)333333333和112231425162718239+3=78+3=87+3=48+3=17+3=29+3=58+3=39+3=減七90進(jìn)一4181905120326142進(jìn)位加3口訣:進(jìn)一減七加數(shù)81928394859687987進(jìn)位加4口訣:進(jìn)一減六加數(shù)81928394859667987加數(shù)444444444和122332435263708339+4=78+4=87+4=48+4=17+4=29+4=58+4=39+4=減六91進(jìn)一4382915221336243進(jìn)位加4口訣:進(jìn)一減六加數(shù)81928394859667987進(jìn)位加5口訣:進(jìn)一減五加數(shù)81925394856667987加數(shù)555555555和132430445361718439+5=78+5=87+5=48+5=17+5=29+5=58+5=39+5=92進(jìn)一4減五483925322346344進(jìn)位加5口訣:進(jìn)一減五加數(shù)81925394856667987進(jìn)位加6口訣:進(jìn)一減四加數(shù)81925394856647987加數(shù)666666666和142531455462708539+6=78+6=87+6=48+6=16+6=25+6=59+6=34+6=93進(jìn)一4減四584935422316440進(jìn)位加6口訣:進(jìn)一減四加數(shù)8192539485664798進(jìn)位加7口訣:進(jìn)一減三加數(shù)81325394856647987加數(shù)777777777和152032465563718639+7=78+7=87+7=46+7=16+7=25+7=53+7=34+7=94進(jìn)一4減三685945323326041進(jìn)位加7口訣:進(jìn)一減三加數(shù)8132539485664798進(jìn)位加8口訣:進(jìn)一減二加數(shù)81325324856647987加數(shù)888888888和162133405664728739+8=78+8=87+8=46+8=12+8=25+8=53+8=34+8=95進(jìn)一4減二786955420336142進(jìn)位加8口訣:進(jìn)一減二加數(shù)81325324856647進(jìn)位加9口訣:進(jìn)一減一加數(shù)81325324156647987加數(shù)999999999和172234415065738839+9=78+9=87+9=46+9=12+9=25+9=53+9=34+9=96進(jìn)一4減一887965521346243進(jìn)位加9口訣:進(jìn)一減一加數(shù)81325324156647再見!再見!進(jìn)位加法速算口訣88+7=加七口訣:進(jìn)一減三88+7=88+10-3=9588+7=?進(jìn)一9減三5進(jìn)位加法速算口訣88+7=加七口訣:進(jìn)一減三88+7=88+進(jìn)位加法口訣：進(jìn)一減補(bǔ)9+1，進(jìn)1減9，等于10。9+2，進(jìn)1減8，等于11。9+3，進(jìn)1減7，等于12。9+4，進(jìn)1減6，等于13。9+5，進(jìn)1減5，等于14。9+6，進(jìn)1減4，等于15。9+7，進(jìn)1減3，等于16。9+8，進(jìn)1減2，等于17。9+9，進(jìn)1減1，等于18。進(jìn)一減幾?進(jìn)位加法口訣：進(jìn)一減補(bǔ)進(jìn)一減幾?進(jìn)位加法口訣：進(jìn)一減補(bǔ)39+1，進(jìn)1減9，等于40。39+2，進(jìn)1減8，等于41。39+3，進(jìn)1減7，等于42。39+4，進(jìn)1減6，等于43。39+5，進(jìn)1減5，等于44。39+6，進(jìn)1減4，等于45。39+7，進(jìn)1減3，等于46。39+8，進(jìn)1減2，等于47。39+9，進(jìn)1減1，等于48。進(jìn)一減幾?進(jìn)位加法口訣：進(jìn)一減補(bǔ)進(jìn)一減幾?算理:27+8=27+10-2借助加8口訣直接寫出結(jié)果:27+8=加8口訣:進(jìn)一減二10-2+37353527+8=進(jìn)一3減二58看成10-2算理:27+8=27+10-2借助加8口訣27+8=加8口訣進(jìn)位加1口訣:進(jìn)一減九加數(shù)91929394959697989加數(shù)111111111和102030405060708090進(jìn)位加1口訣:進(jìn)一減九加數(shù)91929394959697989??進(jìn)位加2口訣:進(jìn)一減八加數(shù)81928394859687989加數(shù)222222222和10213041506170819139+2=78+2=89+2=48+2=18+2=29+2=58+2=39+2=減八4180進(jìn)一915020316041??進(jìn)位加2口訣:進(jìn)一減八加數(shù)81928394859687進(jìn)位加3口訣:進(jìn)一減七加數(shù)81928394859687987加數(shù)333333333和112231425162718239+3=78+3=87+3=48+3=17+3=29+3=58+3=39+3=減七90進(jìn)一4181905120326142進(jìn)位加3口訣:進(jìn)一減七加數(shù)81928394859687987進(jìn)位加4口訣:進(jìn)一減六加數(shù)81928394859667987加數(shù)444444444和122332435263708339+4=78+4=87+4=48+4=17+4=29+4=58+4=39+4=減六91進(jìn)一4382915221336243進(jìn)位加4口訣:進(jìn)一減六加數(shù)81928394859667987進(jìn)位加5口訣:進(jìn)一減五加數(shù)81925394856667987加數(shù)555555555和132430445361718439+5=78+5=87+5=48+5=17+5=29+5=58+5=39+5=92進(jìn)一4減五483925322346344進(jìn)位加5口訣:進(jìn)一減五加數(shù)81925394856667987進(jìn)位加6口訣:進(jìn)一減四加數(shù)81925394856647987加數(shù)666666666和142531455462708539+6=78+6=87+6=48+6=16+6=25+6=59+6=34+6=93進(jìn)一4減四584935422316440進(jìn)位加6口訣:進(jìn)一減四加數(shù)8192539485664798進(jìn)位加7口訣:進(jìn)一減三加數(shù)81325394856647987加數(shù)777777777和152032465563718639+7=78+7=87+7=46+7=16+7=25+7=53+7=34+7=94進(jìn)一4減三685945323326041進(jìn)位加7口訣:進(jìn)一減三加數(shù)8132539485664798進(jìn)位加8口訣:進(jìn)一減二加數(shù)81325324856647987加數(shù)888888888和162133405664728739+8=78+8=87+8=46+8=12+8=25+8=53+8=34+8=95進(jìn)一4減二786955420336142