1.How many millions are there in a billion?
2.In lab, you will make a timeline 4.56 meters long to represent the 4.56 billion years of Earth’s history:
a)How long would 1 billion years be on the timeline?
b)How many years would 100 cm represent?
c)How many years would 1 cm represent?
3.Draw a line that is 1 cm long.
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