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When do we use negative numbers in life?
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We use negative numbers mostly to represent temperatures in our everyday life. They are used to show degrees of coldness. The colder it becomes, the lower the temperature is. The freezing temperature of water is $0^{\circ}C$ at sea level. Anything colder than $0^{\circ}C$ is indicated as a minus (negative) temperature.

We use negative numbers in business, examples:

• A bank balance is positive if there is money in the account. However, if a person overdraws an account (draws more money than there is in the account), the balance will be negative.
• Be careful when reading financial statements. Sometimes a negative sign is used to indicate that a value has been paid and the amount must be deducted from the balance. On the other statements, a negative sign indicates that money has not been paid yet.
• Most businesses use the term debit and credit to avoid confusion. Debit (Dr) on a financial statement shows that money is still outstanding (it must be paid). Credit (Cr) indicates that money has been paid.
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