Question

7 м 1 дм - 5 м 2 дм + 8 м 1 дм​

Answer 1

1) 71+52=123(дм)

2) 123+81=204(дм)

Ответ: 204дм

Answer 2

To perform the arithmetic operations with the given measurements, you'll need to add and subtract the meters and decimeters separately. Here's how you can do it:

Step 1: Convert everything to decimeters (dm) for consistency. 1 meter (m) = 10 decimeters (dm)

Given measurements: 7 m 1 dm = 7 * 10 + 1 dm = 71 dm 5 m 2 dm = 5 * 10 + 2 dm = 52 dm 8 m 1 dm = 8 * 10 + 1 dm = 81 dm

Step 2: Perform the arithmetic operation. 71 dm - 52 dm + 81 dm = 100 dm

Step 3: Convert the result back to meters and decimeters. 100 dm = 10 m + 0 dm = 10 m

So, the result of the expression is 10 meters.