The temperature of a body first rises by ${25}^{\circ }C$ and then falls by  ${32}^{\circ }C$. Find the final temperature of the body, if its initial temperature is : [2 MARKS]
(i) $0^{\circ }C$
(ii) $-{20}^{\circ }C$

Write the opposite of the each of the following statements? [3 MARKS]

(i) Earning of  Rs 1000

(ii) Gaining a weight of 5 kg

(iii) A deposit of Rs 500 in the bank

If we denote the height of a place above sea level by a positive integer and depth below the sea level by a negative integer, represent the following using integers with the appropriate signs. [3 MARKS]

a. 200m above sea level

b. Sea level

c.100m below sea level

What is additive inverse of a number? What is the additive inverse of  $7$ and $-5$?

Represent the following in the form of Integers:  [4 MARKS]

(a). 10 below zero

(b). 5 cm above ground level

(c). Earning Rs 500  from some source

(d) A loss of Rs 200 in the shop

(a) The sum of two integers is 94. If one of them is -25, find the other?

(b) The sum of two integers is -320. If one of them is +80, find the other?
(c) The sum of two integers is 100. If one of them is -50, find the other?
(d) The sum of two integers is -660. If one of them is -70, find the other?  [4 MARKS]

Using the number line find the integer in the following cases : [3 MARKS]

(a) Sum of 5 and -3

(b) 5 less than 3

(c) 4 more than -1

Compute each of the following: [4 MARKS]

 $\left(a\right)15+(-5)+15+(-7)$

 $\left(b\right)34+(-20)+16+(-10)$

$\left(c\right)32+16+9+(-70)$

 $\left(d\right)-3+(-2)+(-5)+7$

Evaluate: [4 MARKS]
(a). $(-3)\times (-3)\times (-3)$
(b). $\left(32\right)\times (-3)\times \left(2\right)\times (-10)$
(c). $(-8)\times \left(0\right)\times (-4)\times \left(18\right)$
(d). $(-2)\times (-3)\times (-4)\times (-5)$

(-10) - (+10) + (+10) + (-10) - (-10) = ___.