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?

Identify the problem with negative numbers as its answer:

(-8) + 10 + (-2) = ____

Which of the following expressions is equal to –30.

(-2) x −(-9) =_____

(100) \(\times \) ______= -500

(-52) + (-52) = ____

____ + (-22) = 0

(-42) + [____ + (-23)] = [___ + 15] + ____

(-62) ÷ (-62) = ___

15 - (-18) is the same as 15 + 18

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

(-15) x 5 = 75

(−30) ÷ (−6) = −6

The smallest negative integer is −1.

Are (11 + 7) + 10 and 11 + (7 + 10) equal? Mention the property.

Given 168 x 32 = 5376 then, find (−5376) ÷ (-32). 

If the letters in the English alphabets A to M represent the number from 1 to 13 respectively and N represents 0 and the letters O to Z correspond from –1 to−12, find the sum of integers for the names given below.
For example,
MATH \(\rightarrow\) sum\(\rightarrow\)13 + 1 + 6 + 8 = 16
(i) YOUR NAME
(ii) SUCCESS

Kamatchi, a fruit vendor sells 30 apples and 50 pomegranates. If she makes a profit of Rs.8 per apple and loss Rs. 5 per pomegranate, what will be her overall profit(or)loss?

-70 + 20 = ?-10

Add
(i) (–40) and (30)
(ii) 60 and (–50)

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

Are (–42) x (–7) and (–7) x (–42) equal? Mention the property.

Are (–81) x  [5 x (–2)] and [(–81) x  5] x (–2) equal? Mention the property.

Ferozkhan collects Rs.1150 at the rate of  Rs.25 per head from his classmates on account of the 'Flag Day' in his school and returns Rs.8 to each one of them, as instructed by his teacher. Find the amount handed over by him to his teacher.

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?