二年级加减乘除53-37-4=5-1x5=12-2+18=8x9-72=混合口算题 174+11-16=12-4-3=56+41-23=9-1x1=6^0x3 二6x8+3=3x7+68=9-1+9=2x8-8=63-7+19 二47-11-21=11+86-1=5x6+4=48+43-21=59+4-40 二5x3+75=72-9-1=1x2+28=24-8-12x1+34=6x4+61=81-9-3=57-13-42=21-7-1=8x5+45=40-5-5=9x2+16=72-17-24=79-73-49x2-10=48-8-3=6-1x4=82-74+72=20-10+1851-19-0=8x7-8=26+73-52=16-2x0=56+31+188x0+49=8-1-4=0x6-0=7+0+94=48-6-8=3x3x9=81-9x5=3-1+7=17+71-66=96-80+7=7x0+31=30-5+58=2x5-2=30-6-5=64-40-8=89-76-11=6x0+56=7x7+2=16-4x3=40-4+20=32-8x6=62+26-70=35-5+7=38-7+69=7x5-8=42-6x2=30-5+65=98-47+0=4-1x9=14^7+25 二12-4-3=18-3-6=32-4+8=42-6+84=15^5+8=36-9x5=1-1+49=48-8-0=91-37+8=8x9-8=24-6-4=15-1-7=5x3+65=12-4x2=1x2+20=9x9-61=24-6+72=61+7-8=4+32+51=93-80=72-8-1=4x2x7=1+1-2=4x6-5=6x5+37=9-3+9=4x5-19=8x3+69=2x9-9=10-8-1=8x5-14=28+30+14=1x0x9=32-8+38=7x8=70-3+13=23