4500 in scientific notation = 4.5 x 103
4.5x103
4.5 times 103.
4500
4.5 x 103
4.5 X 103 The zeroes are superfluous.
251 million in Scientific Notation = 2.51 x 108
63.5 million in Scientific Notation = 6.35 x 107
0.5 million in scientific notation is 5.0 x 105.
1.1 million in Scientific Notation = 1.1 x 106
6.25 million in Scientific Notation = 6.25 x 106
4,500 can be written as 4.50 × 103 in scientific notation.