AP Board 7th Class Maths Solutions Chapter 9 Algebraic Expressions Ex 9.1

SCERT AP 7th Class Maths Solutions Pdf Chapter 9 Algebraic Expressions Ex 9.1 Textbook Exercise Questions and Answers.

AP State Syllabus 7th Class Maths Solutions 9th Lesson Algebraic Expressions Ex 9.1

Question 1.
Write numerical and algebraic coefficients of the following terms.
(i) 4xy
Answer:
Given the term is 4xy
Numerical coefficient: 4
Algebraic coefficient: xy

(ii) – 7a² b³ c
Answer:
Given term is – 7a² b³ c
Numerical coefficient: – 7
Algebraic coefficient: a²b³c

(iii) \(\frac{p q}{2 r}\)
Answer:
Given terra is \(\frac{p q}{2 r}\)
Numerical coefficient: \(\frac{1}{2}\)
Algebraic coefficient: \(\frac{p q}{r}\)

(iv) – 6mn
Answer:
Given term is – 6mn
Numerical coefficient: – 6
Algebraic coefficient: mn

Question 2.
Write the number of terms in each of the following expressions and write ’ them:
(i) 5 – 3t²
(ii) 1 + t² + t³
(iii) x + 2xy + 3y
(iv) 100m + 1000n
(v) – p²q² + 7pq
Answer:

Question 3.
In – 5ab²c write the coefficients of
(i) b²c
(ii) – b²c
(iii) – 5abc
(iv) 5ac
(v) ab²
(vi) – 5ab
Answer:
Given term is – 5ab²c
(i) Coefficient of b²c is – 5a
(ii) Coefficient of – b²c is 5a
(iii) Coefficient of – 5abc is b
(iv) Coefficient of 5ac is – b²
(v) Coefficient of ab² is – 5c
(vi) Coefficient of – 5ab is bc

Question 4.
Write terms containing x and coefficient of x for the following algebraic expressions.
(i) 2x + 5y
(ii) -x + y + 3
(iii) 6y² – 7xy
Answer: