The distance between the earth and the sun is about 2.5x10¹¹m. Express SI prefix in kilometers

2.5x10^8 kilometers

Explanation:

Given that:

Distance between the earth and the sun = 2.5x10¹¹metres

Convert distance in metres to kilometers

Recall that 1000 metres = 1 kilometers

So, 2.5x10¹¹metres = Z kilometers

To get the value of Z, cross multiply

Z km x 1000 m = (2.5x10¹¹metres x 1km)

1000Z = 2.5 x 10^11

Divide both sides by Z

1000Z/1000 = 2.5 x 10^11/1000

Z = 2.5x10^8km

Thus, the distance between the earth and the sun is about 2.5x10^8km