20x80x70x50=5 600 000

80x2x90x50=720 000

1)9×6=54

2)54×5=270

1)5×4=20

2)20×6=120

3)120+20=140

60կգ+274կգ+440կգ=774

12կգ+250գ-8կգ 254

7կգ 425գ + 5կգ 575գ 1012

5կգ 400գ + 600գ 1005

250ց+618ց+50ց 318

82ց 42կգ-65ց 59

5տ 385կգ + 12տ 615կգ 1017

12տ 2ց + 6տ 8ց 28

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