1、99=78=74=75=68=66=69=38=13-5=57=79=29=88=39=85=小学一年级(下)数学口算练习(4) 63=5030=6030=2040=92=55=6010=5050=7020=85=8060=56=8050=6030=108=5010=10080=4060=4050=9040=5040=5020=93=7030=9050=4040=2080=9060=8020=10020=10050=9070=4030=10040=3040=8030=7030=3060=7040=10090=小学一年级(下)数学口算练习(5) 146小学一年级(下)数学口算练习(6) 55-5
2、0=85-80=45-40=16-8=60-50=69-9=86-6=61-60=40+6=10-5=12-5=93-3=49-9=40+60=8+50=52-2=32-2=4+60=99-90=13-9=66-60=58-8=64-4=6+50=5+9=30+70=47-7=64-60=20+10=9+6=77-70=3+60=10-2=11-9=5+30=74-4=44-40=30+9=9+90=51-1=39-30=100-50=10+10=19-10=5+8=78-70=5+80=100-70=21-20=20+70=60+9=5+20=3+5=41-1=39-9=90+7=50+20
3、=14-6=99-9=50+30=13-7=44-4=100-80=45-5=40-10=50-50=80-70=60+5=20+80=60+20=2+60=100-90=4+80=5+70=50-40=33-30=50-30=11-7=1+40=30+30=50+40=70-60=35-30=88-8=90+10=50+10=56-6=4+70=67-60=小学一年级(下)数学口算练习(7) 12-6=50+2017-8=75-5=7+50=6+7=90+4=7+4=13-8=11-5=18-10=60+7=25-5=16-7=70+30=7+7=15-9=60-60=40+10=30+40
4、=11-2=10+70=9+7=54-50=14-9=36-6=12-8=50+3=15-5=3+8=50+50=14-7=90+9=40-20=48-40=4+8=9+4=80+10=78-8=18-9=95-5=14-5=100-20=100-10=7+5=8+7=70+10=12-3=20+50=76-6=9+5=9+9=82-2=33-3=37-7=15-6=17-7=20+9=40+2=4+20=65-5=80-50=72-2=90-30=80+9=8+4=54-4=3+7=8+70=100-40=7+9=小学一年级(下)数学口算练习(8) 34+30=52+5=17+50=24-2
5、0=70-50=27+2=13+50=10+60=3+64=21+60=70+20=60+23=35+4=70-20=6+52=35+20=70+4=42-40=73+2=8+61=3+52=10+90=7+21=26-20=32+5=6+90=43-40=21-1=96-90=77-7=5+43=49-40=5+32=2+54=9+60=62+30=80+8=5+24=32+6=6+60=100-60=100-100=68-8=23-20=28-8=72+2=20+54=29+10=38+30=43+3=88-80=30+46=41+8=6+23=40+50=13+5=3+56=45+3=4
6、2+4=4+52=24+30=33+30=63+3=40+5=63+20=54+20=51+8=11-6=70-40=45+40=43+30=3+9=43+2=76-70=30+61=小学一年级(下)数学口算练习(9) 7+8=60+13=38+40=55+2=3+65=9+8=16+50=78+20=30+38=13-4=4+65=6+5=12-7=30+29=51+30=7+52=57-50=55-5=80-20=12+20=5+6=73-3=68+10=8+6=25+4=44+3=60+35=89-70=20+43=70+18=7+22=11-8=43+5=37+20=24-4=62+3
7、=20-10=2+42=5+21=50+28=4+7=79+10=26+3=2+9=26+30=66+2=8+5=73+6=40+17=52+7=11-3=79-70=57+20=4+9=20+55=6+26=8+71=69-60=63-3=18+30=8+11=30+65=小学一年级(下)数学口算练习(10) 56-292-50633706052502047-107560432041871402049-658-66824725045028930928080203457843048286-6010348112454096-408722720880306950493387383069942205
8、61-2096-2586722062507696049498035408710465-499749405040403067573089-407260763084403074-40773080182010536269-5088-36969629978088806410451045358201038-237-102640342352204240672087118637640392057-4403071672250754282093806985032029-598-70672050312020564120873464491076702小学一年级(下)数学口算练习(11) 77102052301815
9、670( )20565806011916540( )4629105420563103636( )307040194781065( )609853070149147( )40206350421703017425( )2869201361005051401368096801638207550452306330650786010353036301286605024201593520182288776020195187364383030554522065380962317951009080870442482635204440352454028612320690518852432545356699601
10、02113330676043230565406052577721602940153224205433547810小学一年级(下)数学口算练习(12) 9231471161310242145118610135+3031578998117363115986088533203169651428503841127754131697935117124535672420146611136703127991012974617911653303510971262853960113189864145650894512353016757624241161213783137101347550139117688108860477981275330310211498687415564309551335316858777501484121385小学一年级(下)数学口算练习(13) 58 235 539 778314605430159845 54 4254 454 389656 44830791070707320465076402063026 28540274076 498409760574062 54640525 20345 28 487405685042 579 79870857049 8067 36 2330586450396 646 26 43526405630955086
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