Question

Each morning Paul rides 500m on an exercise bike. How many kilometers does he ride in one week?

Answer 1

500 meters per day * 7 days per week = 3500 meters per week.

3500 meters per week * 1/1000 kilometers per meter = 3.5 kilometers per week.

Answer 2

He rides 500m a day. There are 7 days in a week. 500 x 7 is 3500

However, that's 3500 METERS, and you need KILOMETERS, so you do 3500 * 1/1000 which is 3.5km