Question

a \boxed{} is a number on its own, or sometimes a letter that stands for a fixed number in an equation.
the \boxed{} in an expression are the plus, minus, times, or divided by signs.
an equation is a statement that two algebraic expressions are \boxed{}.

Explanation:

1. A constant is a fixed number or letter representing a fixed value in equations.
2. Operations (like +, -, ×, ÷) are the symbols that manipulate terms in expressions.
3. An equation asserts that two algebraic expressions have the same value, meaning they are equal.

Answer:

Constant
Operations
Equal