BECE Mathematics 2020 Paper

Concept:Standard form writes a number as $a \times 10^n$, where $1 \le a < 10$ and $n$ is an integer.Explanation:The given number is $4382.93$.To express it in standard form, place the decimal point after the first non-zero digit, which is $4$.This gives $4.38293$.The decimal point is moved $3$ places to the left to go from $4382.93$ to $4.38293$.Moving the decimal point to the left gives a positive power of $10$.Therefore, $4382.93 = 4.38293 \times 10^3$.This matches option D.Answer:D. $4.38293 \times 10^3$