The exponential form of 2,900 billion is: 2.9 × 1012 or2.9E12
The exponential form of one billion is 1*10^9.
1011
22*11 = 44
4.4 × 107
7.0 × 1011
5.0 × 109
44 = 22 x 111
10.3 billion = 1.03 x 10^10
1.0 × 109
2 × 109
1 x 109