二年级上口算2.doc

口算练习40+15=16+44=45+30=69+19=58+3=33+59+11+49=46+24=59+21=39+34=34+26=39+26=39+35=66+14=71+13=53+12=43+28=24+19=58+12=46+39=25+26=28+8=72+19=16+27=38+37=28+62=39+32=45+15=18+25=34+5=16+72=16+54=44+16=24+18=54+29=42+29=42+16=17+28=13+41=23+11=55+31=45+33=57+28=73+11=86+8=36+22=22+19=89+9=56+33=55+27= 86+8=66-6= 25+23= 80+10= 52+12=62+27= 14+27=66+13=69+20=72+5= 27+29= 12+41= 44+18=63+17=22+8= 15+63=42+27=33+38=49+39=71+16=77+21=97-83=82+7=62+15=51+15=54+12=80+8=92+3=77+22=53+18=20+22=54+40=55+20=23+25=76+11=33+26=81+15=12+26=50+18=23+29=56+24=51+23=44+24=69+15=5+17=54+31=39+36=62+12=63+24=83+14=13+75+5=50+28=30+22=39+17=22+47=74+19=72+4=15+63=48+15=57+18=60+21=52+44=39+18=10+81=80+10=56+29=53+29=86+8+2=38+54=46+26=90-14=34+60+10=40+15=96+13=16+44=45+30=69+19=58+7=70-6=37+29=33+59=61+35=37+27=11+49=46+24=59+21=39+34=34+26=39+26=39+35=66+14=71+13=53+12=43+28=24+19=16+58=46+39=25+26=33+38=3+24=16+27=38+37=28+62=39+32=45+15=18+25=55+27=34+5=16+72=13+16+54=44+16=24+18=54+21=42+29=42+16=17+28=13+41=23+11=55+31=73-71=45+33=57+28=73+11=86+8+2=36+22=22+19=43+29=68+12=27+17=72+17=34+64=51+11=89+7=46+14=10+63=85+8=55+25=67+25=14+36=28+39=86+8=15+35=17+5=41-40=27+3=35+46=46+17=59+30=40+16=64+21=15+47=69+22=65+12=50+17=64+14=10+53=97+13=27+52=63+8=59+17=32+47=46+12=24+30=35+14=77+10=46+11=62+14=75+15=69+14=20+32=28+14=64+28=21+21=81+9=14+62=37+61=54+14=75+13=2+28=47+36=60+13=24+34=18+24=9+13=47+39=53+17=56+14=78+11=64+28=89+9=56+33=25+23=52+12=62+27=14+27=66+13=69+20+10= 72+5=27+29=94-56=12+