Module 3 Lesson 2: Base 10 and Scientific Notation Scientific Notation is a way to write numbers (usually used with incredibly large or incredibly small numbers) as a product. The requirements to write scientific notation: ∙ 10 0 < < 10 (note that d cannot be either 0 or 10) is called the order of magnitude, it can be either positive or negative and tells how many decimal places are used. Examples: Write each number in scientific notation 234,000 0.0035 532,100,000 0.0000000012 3.331 532,000,000 0.0000000000000000123 (there are 16 zeros) Arithmetic Operations with Numbers Written in Scientific Notation Addition and Subtraction: The exponent on the power of 10 must be the same. (3.1 × 10 4 ) + (1.2 × 10 4 ) (2.6 × 10 34 ) − (1.1 × 10 34 ) (2.4 × 10 20 ) + (4.5 × 10 21 ) (3.7 × 10 34 ) − (1.1 × 10 33 )