Learn in the textbookExpressions, Assignment, and Comments
DefinitionAn operator (演算子) is a symbol for an operation such as adding, comparing or combining, and it joins with values to form an expression.
ExplanationThe value an operator acts on is called an operand (被演算子). For example, arithmetic operators calculate with numbers, comparison operators check which of two values is larger or whether they are equal, and logical operators combine or invert true and false. When one expression has several arithmetic operators, precedence (優先順位) applies: parentheses first, then multiplication and division, then addition and subtraction.
AnalogyIt plays the part of verbs like "chop", "mix" and "bake" in a recipe, deciding what to do with the ingredients.
Memory hookThe Japanese word 演算子 ends in 子, the same character as in 原子 (atom) and 因子 (factor), so read it as a small part that carries out an operation.