AP State Syllabus AP Board 6th Class Maths Solutions Chapter 7 Introduction to Algebra Ex 7.2 Textbook Questions and Answers.

## AP State Syllabus 6th Class Maths Solutions 7th Lesson Introduction to Algebra Ex 7.2

Question 1.

Write the expressions for the following statements.

(i) 5 is added to three times z

(ii) 9 times ‘n’ is added to ’10’

(iii) 16 is subtracted from two times ‘y’

(iv) ‘y’ is multiplied by 10 and then x is added to the product

Answer:

i) Given 5 is added to three times z

three times z = 3z 5 is added to three times z = 3z + 5

ii) Given 9 times n is added to 10

9 times n = 9.n

9 times ‘n’ is added to 10 = 9n + 10

iii) Given 16 is subtracted from two times y

two times y = 2.y

16 is subtracted from two times y = 2.y – 16

iv) Given y is multiplied by 10 and then x is added to the product, y is multiplied by 10 = 10.y

x is added to the product = 10.y + x

Question 2.

Peter has ‘p’ number of balls. Number of balls with David is 3 times the balls with Peter. Write this as an expression.

Answer:

Given, number of balls with Peter = p

Number of balls with David = 3 times with the Peter

= 3.p

Expression is 3p.

Question 3.

Sita has 3 more note books than Geetha. Find the number of books that Sita has. Use any letter for the number of books that Geetha has.

Answer:

Given Sita has 3 more note books than Geetha.

Let the number of note books Geetha has = x

Number of note books Sita has = 3 more note books than Geetha

= x + 3

Question 4.

Cadets are marching in a parade. There are 5 cadets in each row. What is the rule for the number of cadets, for a given number of rows? Use ‘n’ for the number of rows.

Answer:

Given 5 cadets in each row.

Number of rows = n

Number of cadets in each row = 5

Number of cadets in n rows = 5 × n = 5n