1、学海无涯二年级口算题84-49=89-36=47+11=25-637 57+96=81+83=46+41=73-459 29-34=86+94=93-455 94-255 11-546 819+99=77-38=568+57=33+183=61-74=71-75=63-34=69+41=69-27=98-213 69-52=51-102 17-273 47+637=255+87=51-34=306+93=426+97=88+19=279+86=41-355 243+85=66-55=52+39=35+153=96-32=60+25=73-83=88-182 77-75=76+46=15-213
2、 77+48=98-568 87-89=89-89=48-126 62+86=31+497=85-40=68-648 73-305 488-3=37-17=99-83=86-328 28+38=46+27=69-243 68-27=124+51=27-186 20-102 95+34=36-164 568+76=87-59=16+273=54+39=11+284=47-427 96-819 79+34=15+182=60+76=488+56=91-486 94-287 97+42=81-637 36-728 60-87=62+59=70+57=47-639 43-546 99+47=408+7
3、8=182+55=52-36=67+78=11+273=77-35=32-93=76-182 85+48=648+58=92-305 75+24=77-57=57-24=40+729=69+25=328+81=38-279 26-102 549+58=26-186 77-15=90+88=30-328 90-93=80+54=30-355 405+88=82-16=88+99=427-4=15+153=17-639 62+86=29+306=17-205 93-147 82-279 96-98=25-155 24-427 44-48=27+49=36-364 40-105 78-729 53+
4、49=246+91=246+54=44-38=488+64=86-97=284+89=71-427 37+279=56-19=81+32=60-284 648+81=86-637 92-46=17-568 20-52=88-486 77-55=24-364 96-52=31-105 20-648 94+67=23-213 58+69=35+27=48+26=82-14=44+126=43+728=19+153=32-324 99+39=84-77=57-408 204-2=69+38=90-84=48-31=84-47=75-16=99+14=54-546 29-82=60-497 73+93
5、=76-147 36-328 124+74=95-42=37+244=81+75=79+85=70-729 38-123 405+66=102+95=73+16=94+99=37+637=23+306=60-164 246+83=40+488=65-45=79-39=72-305 82-497 79+96=99+54=54+58=72-79=92-408 98-60=12+162=13+305=64-37=408-4=567+92=96-567 79+28=36-63=637+88=24-287 369+53=72+44=68-65=68+38=26+28=89-38=87-648 81+54
6、=369+85=497+61=87+82=91-95=78-77=98+97=24+305=29-74=64-86=105+60=23-42=155+72=84-426 72-408 69-40=66-426 41-62=48+324=243-7=99+50=12-189 76+22=49-279 55-279 98+37=41+366=35-306 73+29=63+24=38-305 58-426 29+567=549+93=80-75=70+72=69-83=97-65=11+246=37-244 51+63=81-546 99-38=80+85=56-186 39+49=19-427
7、78+76=50+142=68+19=23+42=59+54=63+98=45+44=37+48=66-83=728+88=79-52=83-86=74+74=153+92=94+69=56+44=57-45=43+153=284+55=29-155 86-73=273-3=56-27=182+77=18+366=32-124 37+162=88-33=21+819=80-142 67+36=357-3=52-459 35+162=92-34=97+20=84-42=455+87=75-49=92+44=29+16=56-244 88-47=42+14=48-168 244+62=44+549
8、=34+243=52+94=17+639=65-648 45-59=49-86=408+64=33+23=84+92=44-43=27+43=49-273 82+33=64-147 79-248 124+53=53-64=40-123 73+36=24+21=55-455 35-83=66-67=27-52=35-74=549+87=56+65=89+46=155+91=364-4=94+35=33-38=94+66=56-11=61+76=86+34=83-64=80-45=45-549 66+25=42+305=44-11=26-639 86-243 287+78=93-213 13+24
9、3=87-248 364+72=26+426=70+95=75+35=204-3=38+459=63+32=12+819=41-58=19-549 205+74=24+122=17-305 57+93=19+427=97+74=639+97=80-105 89+36=16-126 66-29=70+52=87-427 52-10=64+16=86+59=64-78=39+27=89+97=71-105 182-7=77+79=73-105 142+99=95-99=306+85=28+35=73+22=54-36=74-162 96+47=62-43=69+35=324+76=40-126 5
10、9-40=78-97=94+34=68-284 45+24=20-92=99-284 69+77=49+43=93+33=98-205 99-168 39-46=58-405 88-75=59+48=84-15=83-65=86-35=63-85=98+32=58-52=35-366 54+25=86-27=44+41=75+34=36+255=25-34=58-567 77-23=97-183 23-105 39+637=92-153 86+95=32-53=77+36=64-164 50+102=94+65=36+23=36-56=186+74=72-164 29+455=98-77=91
11、-46=30-105 99-89=51-168 27-42=83-255 35-217 12+273=87+26=58+58=75+96=29-248 96+73=40-408 22+637=69+43=52-65=89-39=22-244 89-486 55-73=87-66=76-55=79-408 52+89=70-244 56-16=13-123 68-62=64-455 96+87=20+328=357+79=37-93=49+33=287+70=93-204 23-45=58+66=48-42=459+67=82-205 408+74=168+99=70-648 95+40=68+78=17+279=366+55=40-459
