Question

10км-5км 102м+2км 68м= 12м 2дм-86дм-3дм5см

Answer 1

10км-5км=5км,102м+2км=2.102км

Answer 2

To perform the arithmetic operations you've provided, let's break them down step by step:

1. Subtract 5 kilometers from 10 kilometers: 10 km - 5 km = 5 km

2. Add 102 meters to 2 kilometers and 68 meters: 2 km 68 m + 102 m = 2 km 170 m (since there are 1000 meters in 1 kilometer)

3. Subtract 86 decimeters (dm) from 12 meters and then subtract 3 decimeters and 5 centimeters: 12 m - 86 dm = 12 m - 8.6 m = 3.4 m 3.4 m - 3 dm 5 cm = 3.4 m - 0.35 m = 3.05 m

So, the results are as follows:

1. 10 km - 5 km = 5 km
2. 2 km 68 m + 102 m = 2 km 170 m
3. 12 m - 86 dm - 3 dm 5 cm = 3.05 m