The temperature at 12 noon at a certain place was 18° above zero. If it decreases at the rate of 3° per hour at what time it would be 12° below zero?

(-10) + ( +7)=____

20 + (-9) + (9)

Which property is illustrated by the equation:(5 x 2) + (5 x 5) = 5 x (2 + 5)

Which of the following does not represent an Integer?

 -(30) + ____ = 60

Fill in the blanks
(i) - 80\(\times \)__ = -80

_____\(\times \) (-9) = -45

 (−40) ÷____ = 40

75 + (-25) = __

(-45) - (-8) = (-8) - (-45)

(-100) x 0 x 20 = 0

(−30) ÷ (−6) = −6

The product of two negative integers is a positive integer

(−90) + ( −30) = 60

Add the following
(i) 8 and –12 using number line
(ii) (–3) and (–5) using number line
(iii) (-100 + (-10)  
(iv) 20 + (-72)
(v) 82 + (-75) 
(vi) -48 + (-15)
(vii) -225 + (-63)

Kabilan was having 10 pencils with him. He gave 2 pencils to Senthil and 3 to Karthik. Next day his father gave him 6 more pencils, from that he gave 8 to his sister. How many pencils are left with him?

What number should be added to (–17) to get (–19)?

During summer, the level of the water in a pond decreases by 2 inches every week due to evaporation. What is the change in the level of the water over a period of 6 weeks?

If P = -15 and Q = 5 find (P-Q) + (P+Q)

Subtract 94860 from (-86945)

Divide (72) by 8

Add the following integers using number line
(i) 10 and –15
(ii) –7 and –9

Find the missing integers 
(i) 0 + (2345) =______
(ii) 23479 +  ______= 0

(i) Subtract (−40) from 70 
(ii) Subtract (-12) from (-20)

A shopkeeper earns a profit of Rs. 5 by selling one notebook and incurs a loss of Rs. 2 per pen while selling of his old stock. In a particular day he earns neither profit nor loss. If he sold 20 notebooks, how many pens did he sell?