The proper format for scientific notation is a x 10^b whereĪ is a number or decimal number such that the absolute value ofĪ is greater than or equal to one and less than ten or, 1 ≤ | a| < 10. How to Convert a Number to Scientific Notation You can also enter numbers in e notation. To enter a number in scientific notation use a carat ^ to indicate the powers of 10. Enter a number or a decimal number or scientific notation and the calculator converts to scientific notation, e notation, engineering notation, and standard form formats. Convert a number to and from scientific notation, e notation, engineering notation, standard form, and real numbers.