111.
ա) 20x718x50=20x50x718=718000
80x60x50=80x50x60=2400000
30x24x50x20=50x20x30x24=720000
բ) 40x48x25=40x25x48=48000
40x70x50=40x50x70=140000
50x42x40x2=50x2x42x40=1680000
12.
20xax70xb=20xbx70xa=5600000
13.
450×32-526+(9324-872):2=13774
4500:3x(275:5)=82500