74дм 0,8дм 350000мм 37дм400дм 37мм

To convert the given measurements to decimeters (dm), we need to remember that 1 decimeter (dm) is equal to 10 centimeters (cm).

1. \(74\, \text{dm} = 74 \times 10 = 740\, \text{cm}\)
2. \(0.8\, \text{dm} = 0.8 \times 10 = 8\, \text{cm}\)
3. \(350000\, \text{mm} = 350000 \div 10 = 35000\, \text{cm} = 35000 \div 10 = 3500\, \text{dm}\)
4. \(37\, \text{dm} 400\, \text{dm} = 37 \times 10 + 400 = 370 + 400 = 770\, \text{dm}\)
5. \(37\, \text{mm} = 37 \div 10 = 3.7\, \text{cm}\)