The mass of an Asian elephant is about ____ grams.3 x 105 , 3 x 106 The mass of a horse is about ____ grams.5 x 105 , 5 x 106 The mass of a rabbit is about ____ times heavier than a mouse.1 x 102 , 2 x 102 , 5 x 101 The mass of a cow is about ____ times heavier than a mouse.1 x 103 , 2 x 104 , 3 x 105 The mass of a pig is about ____ times heavier than a cat.2 x 101 , 3 x 101 , 6 x 101