1、6+7=522+23=642=120805=40155+5=600-50=56200-36=15+53=380+50=789+0=3004+8=6800=25=6+6=436-24=1119=33+60=54408=61-13=15942-15=18180-60=72-40=47+8=14+85=61+27=170+20=5773+16=60+300=44-9=72+16=43+32=35-8=567+56=12421-7=83280-9=4235-6=282183-20=43-30=91=796-42=58-36=72368142+13=2424+8=27-3=42-6=7+44=64-8=
2、493519+41=73-4=24510+200=7+1130+80=46-8=5-7=3-8=307+63=66346+10=65+40=55-20=9+46=1083-29=43-17=21+27=64516400+50=38+26=28+6=36+4=38+16=4525+23=12+35=27+71=46+33=21+15=36+22=59+18=72+24=93-8=56-30=27+25=5+58=78+15=180+200=93-80=41-29=360+80=85+247=310200320660700630350186015=4008+220=22+40=8-7=380-190=3+15=2753+8=84+7=80-44=1800-900=420+80=3