Final answer:
Keiko swims 700 meters each day, which is equivalent to 0.7 kilometers when converted from meters to kilometers.
Step-by-step explanation:
Keiko swims 700 meters each day. To convert meters to kilometers, we need to understand that 1 kilometer equals 1,000 meters.
To convert 700 meters into kilometers, we divide the number of meters she swims by 1,000:
- 700 meters ÷ 1,000 = 0.7 kilometers
Therefore, Keiko swims 0.7 kilometers each day.