Arithmetic skill, or the ability to perform mathematical calculations, is an important skill to have. ADDING, which is a 6-letter solution for the term, is one of the most basic operations in mathematics and involves combining two or more numbers to get a sum. Subtracting, another 6-letter solution, is the opposite of ADDING and involves taking away one number from another. Multiplying, a 9-letter solution, is a more advanced operation that involves multiplying two or more numbers together to get a product. Dividing, also a 9-letter solution, is the opposite of multiplying and involves dividing one number by another. All of these operations are essential components of arithmetic skill.