1、 4610=2420= 40 606= 90028+2=14 700-300=51-3=217=18+16=6008= 78-28= 80+120=560=1512 36-12= 120-20= 16 50-25=20+180=2003920-14= 165= 40 872124= 27127=70035070=591 8122= 178 3080= 80026585=11035=901245 3000300=605 5050=306702199= 480 2027 6215=860194020= 520430=5117=61=873= 9131=804658708= 400 210 4500
2、80= 300 88112= 380 36 8690=338804802222=1639= 2709238 1308107224= 1650100 2340=4560 67+23= 48026 50592-45= 270+30= 460+200= 600 876=6 36354= 502499 800800897= 72728290308020= 1288= 5732=86862= 2 24156=1834=60= 45555 70(4032)3002960 125252 75255 514632960350246667174009069 6228173088001320643631 36140798040491015025642302060 207073010 6 5070703 356446113696906036138443441692635 245738426447.5+29.6= 39.4-13.9=8325865= 726 2351784=71.2-16.3=16.8+25.4= 647=4 1555= 4538=80732.2-21.711.7+29.3=3.5+51.2=14.1-12.2=