Download Q1. Write a pair of negative integers whose difference is

Q1.
Write a pair of negative integers whose difference is
.
Q2.
Write a positive integer and negative integers whose sum is
Q3.
Subtract the sum of
Q4.
Subtract
Q5.
Write the additive inverse of the following:
(i)
.
.
from the sum of
.
(ii)
Q6.
Simplify :
Q7.
If
Q8.
For each of the following, write True or False:
(i) The smallest integer is .
Q9.
, verify that
(ii) The sum of two negative integers is always negative.
(iii) The sum of a negative integer and a positive integer is always positive.
Multiply:
(i)
(ii)
(iii)
Q10.
Find the product:
Q11. Simplify:
Q12.
In a class test containing
and
questions,
marks are given for every correct answer
marks are given for every incorrect answer. Shweta attempts all questions
but only
of her answers are correct. What is her total score?
Q13.
By how much does
exceeds
Q14.
By what should we divide
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?
to get
?
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Q15.
Evaluate:
(i)
(ii)
Q16.
Fill in the blanks:
(i)
(ii)
Q17.
By what integer should we divide
to get answer as
Q18.
Let
Q19.
multiplication over addition.
Let
Q20.
An elevator descends into a mine shaft at the rate of
?
. Then verify the Associative law and distributive law of
descent starts from
reach
. Then show that
.
. If the
above the ground level, how long will it take to
.
Answers
A1.
A2.
A3.
A4.
A5.
(i)
(ii)
A6.
A7.
A8.
A9.
Hint: Calculate LHS and RHS, and then verify that they are equal.
(i)False (ii) True (iii) False
(i)
(ii)
(iii)
A10.
A11.
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A12.
A13.
A14.
A15.
(i)
(ii)
A16.
(i)
(ii)
A17.
A18. Hint: AssociativeLaw:
Distributive law
a x (b + c) = (a + b) +
(a x c)
A19. Hint: Calculate LHS and RHS separately and show.
A20.
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