Definition: Verse 1: Integers, or real numbers, are whole numbers (1, 2, 3, etc.) as well as fractions and decimals. Chorus: There's always room for integers, no matter how big or small. Verse 2: Integers can be written on paper without any problems. The number line shows us the range of all real numbers. Verse 3: The difference between two integers is also an integer, just like addition (1 + 2 = 3). It's called a negative because it means "less than" or "not equal to." Chorus: Integers are everywhere and keep growing.