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Mathematical breakthrough (fill in the blanks)
The volume of an apple is about 120 cubic centimeter.

The volume of a watermelon is about 8 cubic decimeters.

The volume of the refrigerator is about 150 cubic decimeter.

The volume of a matchbox is about 12 cubic centimeter.

The volume of the ink bottle is about 60 ml.

The volume of thermos bottle is about 2 liters.

3* 1000+20=3020

2.25* 1000=2250