Standard, Expanded, and Word Form
three thousand, four hundred fifteen in expanded form
3,000 + 400 + 10 + 5
three thousand, twenty in standard form
3,020
485 in expanded form
400 + 80 + 5
40,000 + 2,000 + 300 + 10 in standard form
42,310
five hundred nine in standard form
509
six thousand, twelve in standard form
6,012
8,002 in expanded form
8,000 + 2
8,921 in expanded form
8,000 + 900 + 20 + 1
9,203 in expanded form
9,000 + 200 + 3
Standard form definition
The "normal" way to write a number, where each digit is in its place and periods are separated by commas. Example: 4,567
Word form definition
When you spell out the word for each number. Example: two thousand, five hundred sixty-one
Expanded form definition
When you write a number as the SUM of the VALUE of each digit. Example: 2,000 + 400 + 20 + 5
18 in word form (say it)
eighteen
5,000 + 200 + 30 + 1 in word form (say it)
five thousand, two hundred thirty-one
4,000 + 600 + 40 + 9 in word form (say it)
four thousand, six hundred forty- nine
98 in word form (say it)
ninety-eight
600 + 30 + 7 in word form (say it)
six hundred thirty-seven