Write 258.7 in scientific notation.
Answer
$$ 258.7 = 2.587\cdot 10^{2} $$
Explanation
Step 1: Move the decimal point from its current position (the black dot) to a position immediately to the right of the first nonzero digit (the red dot).
2.58.7
Step 2: We moved the decimal point 2 spaces to the right. Therefore, the exponent on base 10 will be positive 2.Now we know that the:
Mantissa = 2.587
Exponent = 2
So, the solution is:
$$258.7 = \color{blue}{ 2.587} \cdot 10^{ \color{red}{ 2 }}$$This page was created using
Scientific notation Calculator