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1、-三年级数学口算题600道-第 7 页40-2=70+90=70+2=140-7=70+50=421752+35= 7208=97999799=804= 26+9=4528160-60= 1608=150+40= 21003=5080=287=5004=248=1220=355=505380042073220480458334202093388041200200117804682945+45= 5090=4298 55+52= 90+30= 90+40= 170-90= 110-30= 50+80=110-80= 50+90=400+300=21306606651054062240808010
2、473070093600610366603433872083656233010739050800860002000120464025294 2505=639=2804=5050=8109=3006=25+41= 1407=2031=90-65= 524474544175 40701316900357291252 496=909=16002=71-68=6001=15003=9300=320062026602640888047500500091124331 5826120409736094429603322244046027050033328049400333069031140900567492
3、00480001000202457295406 10731058049342080903070120464087209103465106603700541207000399030301047302366065900500011407040103660002000808029148050 20043656881060062230400600342980082130720833303220871050040224044043320320483977290936402305075186007002107=38=802=4010=1803=80992804=90100=818=20+90= 80+20
4、= 130-2=3103 390323031148255 31037209 47007006003 4828641848087508808879895008017542842317008009031803300593038004601590034509360637563237071200715299650703753141727840421414026606780077008402430254093131333456963233050615946202680096031500903180780063326578008335760033784808630362335005003328002700
5、80475607440493324205423312307804810404040108935627241230(3-1)242-3054(23-3)313307815310607023306050708010684050302171150702423070107450107011304024201220302120702812013136101911503030281020501036303321401210312142069020339020201331202236090391021244201242230224308033105090124022032240904020034120213
6、01046370033302041660024205030045507080077239 108969101330233049060606040903021403020409023133204070481970649002310203545353220706084190063420333031207026841098007030242864759022306500870422040030059001033220807020140206602240442041394320463742063006401136091034409090604907203430038046503303250568080
7、21408040103720502000300880270204004= 06650306408880440030034393606991012203080 4120971070073330059118020043120600904700700443740128447630771230433130213043202075182348903030124624 073422010051050350552292402523940084808333050580036050410241203103202344043032035103529614107303050908030201490504206300
8、6240469102240332090097011450050020404004493370772337836114230346910-5= 90+20= 17-8= 180-80= 3505= 4070433890508465431610805182500408810700581994070 4404323484540990913360071203480239356089903 420263316048007006903580244048248026052448404 051085707590084493038357296868498073303323 4242665466+26= 1316
9、839150-60= 700+600= 1502455270+80= 110-6= 659 5738150070042299377076603960318096515660680021402=4008=4806=305=04 =2406=1602=903=751=3208=4004=2404=54009=2804=5050=8109=3006=25+41= 1407=2031=90-65= 524474544175 40701316900357291252 496=909=16002=71-68=6001=15003=9300=320062026602640888047500500091124331