Page 26 - Maths Skill - 6

24 Maths

Solution: (i) Place Temperature Temperature in integer form

Siachin 10°C below 0°C –10°C
Shimla 2°C below 0°C –2°C
Ahmedabad 30°C above 0°C +30°C

Delhi 20°C above 0°C +20°C
Srinagar 5°C below 0°C –5°C

Srinagar
Siachin Shimla Delhi Ahmedabad

(ii)
– 25 – 20 – 15 – 10 – 5 0 5 10 15 20 25 30 35 40

(iii) Siachin is the coolest place.
(iv) Delhi and Ahmedabad.

Exercise 2.1

1. Write the opposite of the following numbers.
(i) 25 (ii) – 2 (iii) 4 (iv) – 8
2. Write all integers between.

(i) – 4 and 1 (ii) – 4 and 3 (iii) – 5 and – 1
(iv) 0 and 5 (v) – 3 and 3 (vi) – 2 and 0

3. Using the number line, find the integer which is.
(i) 4 more than – 3 (ii) 4 less than 2 (iii) 4 more than – 4
(iv) 6 less than 0 (v) 9 more than – 12 (vi) 8 less than – 2

4. Which is smaller?
(i) – 120 or 12 (ii) – 55 or – 35 (iii) – 134 or – 131
5. Which number in each of the following pairs is greater?

(i) – 38, – 43 (ii) 0, 5 (iii) –150, – 165
(iv) 210, – 405 (v) 0, – 9 (vi) 140, 130

6. Fill in the blanks with an appropriate symbol ‘>’ or ‘<’.
(i) – 9 ___ – 5 (ii) 0 ___ 2 (iii) – 5 ___ – 8
(iv) – 9 ___ 2 (v) – 3 ___ 0 (vi) + 5 ___ 1

7. Arrange the following in increasing order.
(i) 6, 4, – 5, – 10, 1, – 2, 0, 15 (ii) – 7, 6, 2, – 8, 0, 7

(iii) 4, – 3, 5, – 8, – 5, 1, 10 (iv) – 19, 15, – 7, 8, 10, 1, –2
8. Arrange the following in decreasing order.
(i) – 2, – 1, 5, 0, 8 (ii) 7, – 3, – 4, 0, 4, – 10

(iii) – 10, 6, 3, – 5, – 1, 7 (iv) – 15, 8, – 7, 10, 0, 2