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

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