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The difference between decimals and integers lies in their structure and use in the numerical system:

1. Integers:

   • Definition: Integers are numbers without fractions or decimals. They can be positive, negative or zero.
   • Examples: -3, 0, 5, 42
   • Usage: Integers are often used in situations where only complete units are counted (e.g., number of people in a room).

2. Decimal Numbers:

   • Definition: Decimal numbers contain a fraction expressed by a decimal place (period or comma). They more accurately represent proportions that lie between the integers.
   • Examples: 3.14, -0.5, 42.0, 7.89
   • Usage: Decimals are used to represent precise values, especially in mathematical, scientific, and financial contexts (e.g., measurements, amounts of money).

Summarized:

• Integers are whole units without fractions.
• Decimals contain fractional proportions and allow values to be specified more precisely.