Complete the following expression.
$4000$4000$=$=$\editable{}$$\times$×$10^3$103
Which one of the following numbers is equivalent to $7\times10^{-3}$7×10−3?
$10^5$105 is equal to:
Use the standard form A × 10^n where n is a positive or negative integer, and 1 ⩽ A < 10.
Use the standard form A × 10^n where n is a positive or negative integer, and 1 ⩽ A <10.