To do well on the GED math test you need to have strong grasp on basic mathematical operations (addition, subtraction, multiplication and division) and how numbers work.
Each number digit has ten values (0-9). Each digit is ten times as great as the digit immediately to its right, for example 30, where a three is the second digit, is ten times as great as 3. Each digit has a name. The first digit is called ones, the second, tens, the third, hundreds, and so on. Here is the number 35,184,981,694 with the each digit above the name of that digit. Commas are placed between each group of three digits.
The way you would say this number is “thirty-five billion, one hundred eighty-four million, nine hundred eighty-one thousand, six hundred ninety-four.”
More about basic operations and number sense:
Negative Numbers and Absolute Values
Word Problems and Basic Operations
Order of Operations
Mean, Median and Mode