Standard Form Diagnose

a) Write 1200 in standard form. Type your answer without spaces. π + − ÷ × < > ≤ ≥ π

b) Write 4.5 × 10^-4 as an ordinary number. π + − ÷ × < > ≤ ≥ π

c) Use your calculator to calculate (9.999 × 10³) × (9.999999 × 10⁶), and using the full calculator display write down your answer in standard form. Type your answer without spaces.  π + − ÷ × < > ≤ ≥ π