BECE Mathematics 2010 Paper

A standard form should be in the form a.bcde $\times 10^{n}$The decimal point must be after the first non-zero digit.The $n$ is the number of times the decimal point has to be moved to be right after the first non-zero digit.If it is moved to the left, the $n$ is positive and if to the right, $n$ is negative.Every number has .0 at the end which is not written$\;4037=4037.0$$\;4037=4.0\;3\;7.0=4.037 \times 10^{3}$Note: We moved three times (3) to the left, hence the power is positive 3.