Question

Express 75000000000 in scientific and calculator notation

Answer 1

$7.5*10^{10}$ in scientific notation (also called standard form).

Answer 2

The scientific notation:

$a\cdot10^k\\\\1\leq a < 10,\ k\in\mathbb{Z}$

$7\underbrace{5,000,000,000.}_{\leftarrow10}=7.50000000000\cdot10^{10}=7.5\cdot10^{10}$