Решить задачу разными способами (60+30)×5; (30+20)×4; (2+4)×70; (5+4×30; (20+50)×6; (60+30)×3; (80+10)×8; (50+3)×10
(60+30)*5=450 (30+20)*4=200 (2+4)*70=420 (5+4)*30=270 (20+50)*6=420 (60+30)*3=270 (80+10)*8=720 (50+3)*10=530