You cannot write 14 + 4 into standard notation. However, 14 + 4 is 18.
You would write it as 1.7x102
In decimal notation, it would be 18.75.
1,000,000,000.
70
3,700,000
900,000
38,000,000,000
7,800,000,000
14,050,000,000
6,000,000,000
4,877 is the standard notation.