Write whether the expression is a numerical expression or an algebraic expression.

$96$

Write whether the expression is a numerical expression or an algebraic expression.

$x^2-5yz$

Write whether $215x^{2}yz$ is numerical expression or algebraic expression.

Write whether the expression $95÷5\times 2$  is a numerical or an algebraic expression.

What is the degree of the monomial $7y$?

What is the degree of the monomial $-x^{2}y$?

What is the degree of the monomial $x{y}^2{z}^2$?

What is the degree of the monomial $-11y^2{z}^2$?

What is the degree of the monomial $3mn$?