Identify the expression $3xy$ as Monomial / Binomial / Trinomial / Multinomial.

Identify the expressions given below as monomial, binomial,trinomial and multinomial.

$5x^{2}y+6x$

Identify the expression $a+4x-xy+xyz$ as Monomial / Binomial / Trinomial / Multinomial.

Identify and write the like terms in each of the following groups.

$a^2,b^2,-2a^2,c^2,4a$

Identify and write the like terms in the following groups.

$3a,4xy,-yz,2zy$

Identify and write the like terms in the following groups.

$-2x^{2}y,x^{2}y,5y^{2}x,x^{2}z$

Identify and write the like terms in the following groups.

$7p,8pq,-5pq,-2p,3p$

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

$x+1$

Write whether the expression is Numerical Expression / Algebraic Expression.

$3m^2$