Scientists recently calculated that as many as 2.5 billion Tyrannosaurus rex lived during the 3 million years the dinos roamed the planet!
With teeth as large as bananas, the T. rex has often been called king of the dinosaurs.
Fill in the chart to reach 2,500,000,000 (2.5 billion).
2.5 × 10 = 25
25 × 10 = 250
250 × 10 = ___________
___________ × 10 = 25,000
25,000 × 100 = ___________
___________× 1,000 = 2,500,000,000