Real Number System

123456
Across
  1. 2. numbers that cannot be written as a fraction
  2. 5. 0 and natural numbers
  3. 6. any number that can be expressed as a fraction
Down
  1. 1. numbers beginning with 1 and increasing by 1 forever
  2. 3. all positive and negative whole number
  3. 4. any number that can be represented on a number line