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 the 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) (ii)
(iii)
(iv)
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.