Jharne De and Ranjana Kumar Solutions for Chapter: Algebraic Expressions, Exercise 1: Mental Maths

If the length of a rectangle is $3x \mathrm{m}$ and its breadth is $2x \mathrm{m}$, then its perimeter will be _____ $\mathrm{m}$.

If the side of a square measures $5a cm$, then its perimeter is _____ $cm$.

The coefficient of $x$ in $-21x^{2}yz$ is _____.

The degree of the polynomial $x^{2}y+x^3+2x^2{y}^2$ is _____.

The degree of a constant term is always _____.

The value of the expression $2p-q$ for $p=15$ and $q=-30$ is _____.

The value of the expression $x^4+y^2$ for $x=-1$ and $y=-2$ is _____.

The sum of two like terms is another _____ term.