100 !
drag the tiles to the boxes to form correct pairs.
the table shows the distances between a star and three celestial objects. use the conversion factors to rewrite the distances in different, but equivalent, units.

celestial objects distance from the star
object a 0.1877 pc
object b 30.06 au
object c 778.3 million km

conversion factors:

1 au = 1.5 × 108 km
1 light-year = 9.5 × 1012 km
1 parsec = 31 trillion km, or about 3.262 light-years

distance to object a
distance to object b
distance to object c
0.0001458 pc
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5.2 au
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57.91 million km
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