Q1 - Write an expression for

1) 7 multiplied by y and 2 subtracted from the product'.

2) subtracted from - n'.

Q2 - Identify monomials, binomials and trinomials from the following :

(a) -8xy.

(b) x + z^{2}

(c) 9

(d) a + b + c^{3}

(e) p - r + q

(f) x - 1

Q3 - Give expressions in the following cases:

a) 11 added to 2m

b) 5 times y to which, 3 is added

c) y multiplied by 5 and the result subtracted from 16

d) y divided by 5 and 5 added to the result

Q4 - Take Sarita's present age to be y years and answer the following:

(i) What will be her age 5 years from now?

(ii) What was her age 3 years back?

(iii) Sarita's grandfather is 6 times her age. What is the age of her grandfather?

(iv) Her grandmother is 2 years younger than grandfather. What is grandmother's age?

**Q.5 Solve the following equations: **

** (i) 2x + 5 = 13**

** (ii) p - 2 - 3 + (p/2)**

** (iii) 6x + 5 = 2x - 7**

** (iv) 5(2x - 1) = 14 - 3(x + 2)**

**Q. 6 Solve : **

**1) There are 650 students in a school. If the number of girls is 106 more than the boys, how many boys are there in the school?**

**2) A man is thrice as old as his son. After 12 years, he will be twice as old as his son. Find their present ages.**

**
3) Vidya's mother's age is 5 years more than the three times of Vidya's present age. Find Vidya's present age, if her mother is 44 years old.
**

**
4) Sachin says that he has 6 books more than the 6 times of the books Priyanka has. Sachin has 42 books. How many books does Priyanka have?
**

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