Question 1: Write the following integers in an ascending order:

(i) (ii)

Answer:

(i)

(ii)

Question 2: Write the following integers in an descending order:

(i) (ii)

Answer:

(i)

(ii)

Question 3: Add the following:

(i) (ii) (iii)

(iv) (v)

(v)

Answer:

(i) (ii) (iii)

(iv) (v)

(v)

Question 4: Find the additive inverse of:

(i) (ii) (iii)

Answer:

(i) Therefore additive inverse is

(ii) Therefore additive inverse is

(iii) Therefore additive inverse is

Question 5: Find the successor of the following integers:

(i) (ii) (iii) (iv)

Answer:

(i) (ii) (iii) (iv)

Question 6: Find the predecessor of the following integers:

(i) (ii) (iii) (iv)

Answer:

(i) (ii) (iii) (iv)

Question 7: A bus starts from the terminal and moves to the EAST and then to the west. How far is the bus from the terminal?

Answer:

Question 8: A shopkeeper purchased a book for , a pencil box for , a note book for and a pen for . He sold the book for , pencil for , notebook for and a pen for . What is his gain or loss?

Answer:

Total Cost in Rs.

Total Sales in Rs.

Gain = Total Sales – Total Cost

Question 9: Find an integer such that:

(i) (ii) (iii) (iv)

Answer:

(i) (ii)

(iii) (iv)

Question 10: Subtract:

(i) from (ii) from (iii) from

(iv) from (v) from the sum of and

(vi) The sum of and from the sum of and

Answer:

(i) (ii) (iii)

(iv) (v)

(vi)

Question 11: Simplify:

(i) (ii)

Answer:

(i)

(ii)

Question 12: The sum of the two integers is . If one of the integer is , find the other.

Answer: Let one integer

Question 13: The difference of an integer and is . Find the value of .

Answer:

Question 14: During a month, the average temperature of desert region was and the average night temperature was . Find the difference between the average day temperature and the average night temperature

Answer:

Ave. day temperature – Avg. night temperature

Question 15: Find the products:

(i) (ii) (iii)

(iv) (v) (vi)

Answer:

(i) (ii)

(iii) (iv)

(v) (vi)

Question 16: Divide

(i) by (ii) by (iii) by (iv) by

Answer:

(i) (ii)

(iii) (iv)

Question 17: In an examination consisting of questions, marks are awarded for each correct question, marks are awarded for each incorrect answer and for each question left un-attempted. Aditya answered questions correctly and questions incorrectly. While Cyrus answered questions correctly and questions incorrectly. Who scored more marks and what was his score.

Answer:

Aditya’s Marks

Cyrus’s Marks

Therefore Aditya scored more marks and his score was marks.