两位数以内加减法习题41-10=56-47=96-68=79+24=38-5=44+24=86-3=52-41=30-30=70+10=19-15=1-0=82+11=45-42=67-59=90+16=62+8=81-9=36-34=77-26=55+19=78+27=6+4=3+2=48+7=57-0=47-35=66+43=57-18=57+25=61-42=13+6=8+2=61-48=81-69=96+60=1-1=85+77=68+64=18-3=59+32=33+20=41-17=53+53=17+9=56+31=56-39=51-49=64+58=16-5=8+6=10+6=52+1=0-0=36+9=11+2=52+48=92-13=60+0=45-44=7-5=25+9=5-0=22+3=2+0=31-31=88-79=64+52=93+50=77-20=27-3=87+63=3+2=29+2=81+18=