Մաթեմատիկա դասարանում 09.29.2020

796+200+4+450

796+4+200+450=1450

38000+6550+2000

38000+2000+6550=46550

42300+142+2000+700

42300+700+2000+142=45142

750+2807+880+250

750+250+2807+880=4687

30կմ+352կմ+170կմ

30կմ+170կմ+352կմ=552կմ

8կմ 420մ-210մ=8կմ 210մ

5կմ 385մ+7կմ 400մ=12կմ 785մ

8կմ 200մ+800մ=9կմ

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