Glossary of terms

A number with no fractional part. 

Includes: 

• the counting numbers {1, 2, 3, ...}, 
  
• zero {0}, 
  
• and the negative of the counting numbers {-1, -2, -3, ...}
  

We can write them all down like this: {..., -3, -2, -1, 0, 1, 2, 3, ...}

Examples of integers: -16, -3, 0, 1, 198