Following number line shows the temperature in degree Celsius (^o C ) at different places on a particular day.

What is the temperature difference between Lahulspiti and Srinagar?

3

(a)

Following number line shows the temperature in degree Celsius (^o C ) at different places on a particular day.

Can we say the temperature of Srinagar and Shimla taken together is less than the temperature at Shimla? Is it also less than the temperature at Srinagar?

3

(a)

In a quiz, positive marks are given for correct answers and negative marks are given for incorrect answers. If Jack's scores in five successive rounds were25, - 5, - 10, 15 and 10, what was his total at the end?

3

(a)

At Srinagar, the temperature was -5° C on Monday and then it dropped by 2° C on Tuesday. What was the temperature of Srinagar on Tuesday? On Wednesday, it rose by 4°C. What was the temperature on this day?

3

(a)

Verify a + (- b) = a - b for the following values of a and b: a = 137, b = 92

3

(a)

Verify -a + (-b) = - (a + b) for the following values of a and b. a =137, b = 49

3

(a)

A certain freezing process requires that room temperature be lowered from 30°C at the rate of 5°C every hour. What will be the room temperature 12 h after the process begins?

3

(a)

Write a negative integer and a positive integer whose difference is -14.

3

(a)

If the product of two integers is -512 and one of them is -8, then what is the other integer?

3

(a)

Starting from (- 6) x 3, find (- 6) x (- 7).

3

(a)

In a class test containing 10 questions, 5 marks are awarded for every correct answer and (-2) marks are awarded for every incorrect answer and 0 for each question not attempted.
(a) Mohan gets 6 correct and 4 incorrect answers, what is his score?
(b) Rekha gets 5 correct and 3 incorrect answers and 2 questions she did not attempt. What is her score?
(c) Mayank gets 5 correct and 5 incorrect answers. What is his score?
(d) Jeetu gets 3 correct and 5 incorrect answers. What is his score?

3

(a)

Arushi deposits Rs 2000 per month in her account for six months as saving. But when she is in need, she withdraw Rs 1600 and once again she withdraw Rs 5,000 from her account.
(a) If withdrawal of amount is represented by (-ve) sign and deposition by (+ve) sign, what is the present position (balance) of her account?
(b) Which mathematical concept is used in this problem?
(c) What is its value?

3

(a)

Is 10 x [6 + (-2)] = 10 x 6 + 10 x (-2)? 

3

(a)

Find the product: (-1) x (-1) x (-1) x (-1) x (-1).

3

(a)

Some points are marked with integers on the following number line. Write these integers in descending order.

3

(a)