32+268= 24×25 = 640÷40 = 760-403 =
28×99 = 4024÷8= 45+65+55= 174-48-52 =
420÷35= 50×15×4= 68+72= 460-280=
230×4 = 63÷9×7 = 124-65 = 360÷4 =
27+45 = 46×5-3= 0×12 = 125+75 =
19×3×1519×(3×15) 210-40+20210-(40+20)
150÷25×5150÷(25÷5) 960+60-20960-(60+20)
78+102+0(78+102)×0 350×13-45000÷(35×13)