Q1. Which of the following is a variable?
(a) 7
(b) −5
(c) x
(d) 10
Q2. Which expression is a binomial?
(a) 4x
(b) x + 7
(c) 2a² + b² − 5
(d) 12
Q3. The degree of the polynomial 2x³ + 7x − 5 is:
(a) 1
(b) 2
(c) 3
(d) 0
Q4. Which of the following are like terms?
(a) 3xy and 5ab
(b) 4x² and 7x²
(c) x² and xy
(d) 2a and 3b
Q5. In the term −6ab², what is the numerical coefficient?
(a) −6
(b) a
(c) b²
(d) ab²
Q6. Write the perimeter of a square with side l using algebra.
Ans:
Q7. Write the expression for the area of a rectangle with length l and breadth b.
Q8. If n boxes each contain 24 chocolates, write an expression for the total chocolates.
Q9. Identify the like terms: 3xy, −7a, 2xy, 5b, 10a.
Q10. Classify: 9x² − 4x + 7 as monomial, binomial, or trinomial.
Q11. A pattern is made using matchsticks. For n squares in a row, the number of matchsticks is given by the rule: 3n + 1.
(a) How many matchsticks are needed for 5 squares?
(b) How many matchsticks are needed for 12 squares?
Q12. Meena is 8 years younger than Ritu.
(a) If Ritu’s age is x years, write Meena’s age.
(b) If Ritu is 15 years old, what is Meena’s age?
(c) Express Ritu’s age in terms of Meena’s age y.
Q13. A cube has edge length l.
(a) Write an expression for the total length of its edges.
(b) If l = 4 cm, find the total edge length.
(c) If l = 10 cm, find the total edge length.
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