Question

which value is greater than $7 \times 10^{6}$?
$8 \times 10^{3}$ $4 \times 10^{7}$ $9 \times 10^{-7}$ $5 \times 10^{-3}$

Explanation:

Step1: Convert to standard form

$7 \times 10^6 = 7,000,000$
$8 \times 10^3 = 8,000$
$4 \times 10^7 = 40,000,000$
$9 \times 10^{-7} = 0.0000009$
$5 \times 10^{-3} = 0.005$

Step2: Compare all values

Compare each converted value to 7,000,000.

Answer:

$4 \times 10^7$