1. Full name in Capital letters with address; if any surname first. Signature of Applicant. A standard form is a form of writing a given mathematical concept like an equation, number, or an expression in a form that follows certain rules. Representing very large or very small numbers concisely, the standard form is used. For example, 4.5 billion years is written as 4,500,000,000 years. Learn how to convert between ordinary numbers and standard form, a way of writing very large or very small numbers by comparing the powers of ten. Find definitions, examples, worksheets and common misconceptions on standard form. A number is said to be in standard form when it is expressed as k × 10n, where 'k' is a decimal number such that 1 ≤ k < 10, and 'n' is an integer (positive or negative).