Definition: Arithmetic means "measuring" or "calculating". It involves the use of numbers to describe a quantity or an event that follows a specific pattern. In simple terms, arithmetic refers to the mathematical process of counting things in order, adding up amounts, and comparing values. For example, if you want to add up 4 apples and 3 oranges, you would do this by putting all the apples together and then adding the oranges together. The result is the total number of items you have counted. Arithmetical refers to "measuring" or "calculating" in a way that involves using numbers or quantities to find patterns. It is often used in everyday language, but it can also be applied in mathematical contexts such as finance or science. One of the most common examples of arithmetical is when someone calculates the total cost of an item or service. For example, if you want to calculate the price of a book on Amazon with tax included, you would do this by adding together all the items in your cart and then multiplying that sum by 13%, which is the amount of tax you will pay. Arithmetic can also be used in everyday conversation when someone says "I have $50 in my wallet" or "He bought a lot of books on sale today". In this case, "arithmetic" refers to using numbers and calculations to describe the quantity or cost of something.