Operations on Variables

Q.

He is poor. He is honest. (Join into simple sentence)

Q.

The sum or difference of two like terms is ……………

Q.

Give the Antonyms of the Following Words Using Proper Prefixes: (a) Flexibility (b) Affordable

Q.

Punctuate the following sentence. please lend me your pencil sir

Q. On adding 2 ice-creams and 3 ice-creams, we will getice-creams.

1. $3$
2. $4$
3. $5$

Q. What algebraic expression must be added to $9y$ to get $25x?$

1. $16y$
2. $16x$
3. $25x-9y$
4. $25y-9x$

Q. Write the following expression using a simpler notation:
$x+x+x+x$

1. $x+4$
2. $4x$
3. $x^4$
4. $x-4$

Q. Match the following:

1. $15\times 3=45$
2. $3x=21$
3. $4a^3$

Q.

Simplify: $(a-b)(c-d)$

Q. Which among the following algebraic expressions cannot be further simplified?

1. $3\times (a+b)+6ab+8a$
2. $5x+4y+7\times (x+y)$
3. $81p+49q+64r$
4. $-1+3+5+6m$