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4 Ways to Write a Number Standard Form: A number written with one digit for each place value (Numerical Form) Example: 356 12,502 Word Form: A number written in words Example: seven hundred thirty-six Ten thousand four hundred five Expanded Form: A way to write numbers that shows that value of each digit Example: 70,000 + 8,000 + 60 + 3 1,000 + 700 + 40 + 1 Expanded Notation: When you multiply the number by its place value and then add them together Example: (6 100,000) + (3 1,000) + (4 100) + (2 10) + (7 1) (2 10,000) + (5 1,000) + (9 10) How To’s Writing a Number in Word Form (from Standard) 62,048,706,003 Trillions billions millions thousands ones Sixty-two billion forty-eight million seven hundred six thousand three *Each group of 3 numbers between commas are called Periods! Writing a Number in Standard Form (from Word) Three trillion four hundred thirty-eight million thirty thousand four hundred eight 0 _ 0 _, 0 8 0 _ 3 _,_ 0 0 _ 0 _ 0 3,_ _4 _3 _,_ Expanded Notation Standard Form to Expanded Notation Example 39,080,705,003 (3 is in the 10 billions place) (3 10,000,000,000) + (9 1,000,000,000) + (8 10,000,000) + (7 100,000) + (5 1,000) + (3 1) Expanded Notation to Standard Form Example 1 (5 100,000,000) + (2 10) To set it up: 5 followed by 8 blanks from 8 zeros in the first set of parentheses 5 __ __, __ __ __, __ 2 __ Empty blanks are filled with zeros! Example 2 (4 100,000,000) + (6 1,000,000) + (5 10,000) + (7 100) + (8 10) 4 0 6, 0 5 0, 7 8 0