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1、-小学二年级数学上册口算300道)-第 3 页544566338844939356024359893056858449604050253974388561640289708827582369285830379301935877076345534540862353525895830473467758183216364841863342463439( )29( )2626( )561633( )2335605235803 304963994238 43755 3162463465542454666560765679187925306015726135662478 669 521967+2136+2
2、717+8353+3528+2865+2714+4639+4236+1825-1351-2430-1278-6187-4435( ) 2124132419241944554322=7450=61=10+46=11+44=397=54+46=65=235=36=36 +40=423=18=585=539=39=2+74=6 0+38=82=207=26=94=5+55=18 + 6=66 +4=14+9=136=15+45=72+13=51+46=15=9750=657=643=5+48=14+20=2315=66=539=6+45=79=137=99=67+2136+2717+8365+279
3、3-3590-4814+4639+4236+1825-1351-2453+3577-1828+2830-1278-6164-5687-444322=7450=61=10+46=11+44=397=54+46=65=235=36=36 + 40=4213=88-10= 88-10= 91-9= 38-5= 79-53= 72-48= 32+49= 79-28= 89-14= 62-18= 26+63= 84-78= 27+56= 94-84= 70-36= 41+35= 29-12= 37-27= 8+47= 91-90= 33-28= 47+32= 50-15= 59-14= 69-49= 1
4、1+36= 18+80= 96-32= 10+27= 32-11= 28+50= 41+18= 83-60= 42+22= 80-25= 75-72= 87-77= 43+41= 59+31= 26-13= 98-23= 60+26= 97-49= 81-12= 91-51= 27+40= 67-41= 69+16= 63-19= 61-7= 42+46= 71+3= 42+26= 70-54= 58-17= 39+56= 59+38= 6+73= 48-48= 17+41= 93-33= 37+48= 34+57= 43+31= 31-20= 39+23= 25-22= 89-52= 39-
5、18= 66-50= 3+97=95+5= 77-63= 29+43= 2+96=90-34= 42+37= 46+37= 83+3= 69-45= 71-14=30+66= 36+44= 35+33= 90-84= 70-17= 21+43= 59-40= 6+36= 48-11=1216 2917 3322 23401524 2315 3741 2913 3813 8524 8822 3748 4315 8612 7023 30127227 6624 3922 851926+43= 92-17=34+49= 23+76= 46+11= 47-3= 82-70= 34+14= 67+33=
6、36+44= 91-9= 57-35= 56-38= 85-51= 26-18= 95-19= 45-11= 75-26= 48-36= 65-9= 98-10= 31-25= 83-17= 40-30= 53-17= 29-18= 76-59= 83-74= 55-41= 38-37= 80-75=42-12= 97-62= 61-6= 96-16=82-58= 84-27= 79-43= 57-49=79-58= 97-23= 83-30= 30-7= 91-32= 72-27= 22-19= 34-24=90-29= 39-15= 73-60= 70-45=99-76= 86-44= 5
7、9-28= 98-38= 28-19= 88-14= 63-15= 56-10= 54-28= 89-39= 50-18= 31-15= 67-39= 54-25= 25-13= 44-16= 53-20= 95-59= 88-64= 80-40= 44-20= 76-49= 77-34= 78-67= 93-26= 72-69= 99-35= 86-48= 97-13= 54-44=52-42= 23-9= 33-5= 49-43= 47-11= 26-18= 52-48= 71-65= 98-51= 25-12= 59-15= 40-21= 87-17= 92-29= 81-36= 65-
8、57= 74-56= 85-65= 51-26= 95-52=126 297 3327 2349 28-19= 88-14= 63-15= 56-10= 61-17= 42+46= 26+43= 34+49= 46-39= 94-23= 58-40= 94-50= 3+24=69-34=48+46+4= 41+29=38+36=3+22+68= 62+12=78-28=73+9+16= 36+31=66-41= 61+2+18=35-17=75-34=39+37+3=72-19=69-322+39+16=75-55=71-43=81+1+6=12+59=56+25=39+18+2=66-39=
9、 44+29=45+22+19=82-48=32-18=13+5+35=69-39=69+16=63+17+9=49-22=43+29=39+29+19=51+29=69+12=33+29+19=52+35-61=44+17+33=67-64=67-34=67+17+3=43+17=90-46=8+26+34=44+17=33-13=31+25+35=80-46=63+19=29+16+36=35+29=68-22=46+17+13=90-65=80-66=39+27+3=72-17=95-66=36+29+16= 60-31=57+18=、73+26+4=57+26=82-17=45+16+
10、29=50-29=74-65=32+23+39=92-27=76-38=46+25+5=54+29=80-28=、29+36+24=59+25=51+39=36+13+27=34+33=17+49=46+53+7=85-39=56+26=29+28+39=83-35=56-49=27+35+28=94-39=54-15=34+29+18=74- 39=70-24=45+ +39=80-46=72-52=38+36+19=68+17=49+37=39+37+19=81-28=65-16=39+16+19=56+29=53+29=53+19+13=36+3=50-31=45+27+3=51-48=