Integers are used in daily life when performing tasks such as recording temperature changes, taking inventory of supplies, and depositing or withdrawing money from a bank. For example, in terms of temperature changes, a rise in temperature of 30 degrees Fahrenheit is represented by the integer +30. A drop in temperature of the same magnitude would be recorded as -30.
The term "integers" refers to all whole and negative numbers, including zero. When taking a physical inventory of supplies or merchandise in a store, stock quantities are noted using positive integers. If items have been sold or otherwise disposed of, the changes would be recorded as a negative integer. This helps store owners know when the inventory is low, so they can reorder more supplies. Similarly, in banking, when depositing or withdrawing $200, the change to the account is represented as either plus or minus $200.