Question

2М45ДМ+1М4дм = 8дм6см-8См= 3м-15дм= 80См-4дм

Answer 1

2м45дм+1м4дм=7м4дм
8дм6см-8см=7дм8см
80см-4дм=40см или 4дм
3м-15дм=1м5дм

Answer 2

To solve the given expressions, let's break them down step by step:

1. 2М45ДМ + 1М4дм: To add these measurements, we need to ensure that the units are consistent. 2M45DM is equal to 2450DM (since 1 meter = 100 decimeters). 1M4DM is equal to 140DM.

Adding 2450DM and 140DM, we get: 2450DM + 140DM = 2590DM.

2. 8ДМ6СМ - 8СМ: Here again, we need to make sure the units are consistent. 8DM6CM is equal to 86CM (since 1 decimeter = 10 centimeters). 8CM remains the same.

Subtracting 86CM from 8CM, we get: 86CM - 8CM = 78CM.

3. 3М - 15ДМ: To subtract these measurements, we convert them to a consistent unit. 3M is equal to 300DM (since 1 meter = 100 decimeters). 15DM remains the same.

Subtracting 300DM from 15DM, we get: 300DM - 15DM = 285DM.

4. 80СМ - 4ДМ: We need to convert the units to be consistent. 80CM remains the same. 4DM is equal to 40CM (since 1 decimeter = 10 centimeters).

Subtracting 40CM from 80CM, we get: 80CM - 40CM = 40CM.

Therefore, the simplified expressions are as follows: 2М45ДМ + 1М4дм = 2590DM 8ДМ6СМ - 8СМ = 78CM 3М - 15ДМ = 285DM 80СМ - 4ДМ = 40CM