Page 1
Chapter 3: Integers
PRACTICE SET 4 [PAGE 15]
Practice Set 4 | Q 1 | Page 15
Classify the following numbers as positive numbers and negative numbers.
–5, +4, –2, 7, +26, –49, –37, 19, –25, +8, 5, –4, –12, 27
SOLUTION
The negative numbers are -5, -2, -49, -37, -25, -4, -12
The positive numbers are +4, 7, +26, 19, +8, 5, 27
Practice Set 4 | Q 2 | Page 15
Given below are the temperatures in some cities. Write to them using the proper signs.
Place Shimla Leh Delhi Nagpur
Temperature 7°C above
0°
12°C above
0°
22°C above
0°
31°C above
0°
SOLUTION
The temperature of Shimla is -7 °C.
The temperature of Leh is -12 °C.
The temperature of Delhi is +22 °C.
The temperature of Nagpur is +31 °C.
Practice Set 4 | Q 3.1 | Page 15
Write the number in the following example using the proper signs.
A submarine is at a depth of 512 metres below sea level.
SOLUTION
-512 m
Practice Set 4 | Q 3.2 | Page 15
Write the number in the following example using the proper signs.
The height of Mt Everest, the highest peak in the Himalayas, is 8848 metres.
SOLUTION
8848 m
Practice Set 4 | Q 3.3 | Page 15
Write the number in the following example using the proper signs.
A kite is flying at a distance of 120 metres from the ground.
Page 2
Chapter 3: Integers
PRACTICE SET 4 [PAGE 15]
Practice Set 4 | Q 1 | Page 15
Classify the following numbers as positive numbers and negative numbers.
–5, +4, –2, 7, +26, –49, –37, 19, –25, +8, 5, –4, –12, 27
SOLUTION
The negative numbers are -5, -2, -49, -37, -25, -4, -12
The positive numbers are +4, 7, +26, 19, +8, 5, 27
Practice Set 4 | Q 2 | Page 15
Given below are the temperatures in some cities. Write to them using the proper signs.
Place Shimla Leh Delhi Nagpur
Temperature 7°C above
0°
12°C above
0°
22°C above
0°
31°C above
0°
SOLUTION
The temperature of Shimla is -7 °C.
The temperature of Leh is -12 °C.
The temperature of Delhi is +22 °C.
The temperature of Nagpur is +31 °C.
Practice Set 4 | Q 3.1 | Page 15
Write the number in the following example using the proper signs.
A submarine is at a depth of 512 metres below sea level.
SOLUTION
-512 m
Practice Set 4 | Q 3.2 | Page 15
Write the number in the following example using the proper signs.
The height of Mt Everest, the highest peak in the Himalayas, is 8848 metres.
SOLUTION
8848 m
Practice Set 4 | Q 3.3 | Page 15
Write the number in the following example using the proper signs.
A kite is flying at a distance of 120 metres from the ground.
SOLUTION
120 m
Practice Set 4 | Q 3.4 | Page 15
Write the number in the following example using the proper signs.
The tunnel is at a depth of 2 metres under the ground.
SOLUTION
-2 m
PRACTICE SET 5 [PAGE 18]
Practice Set 5 | Q 1.1 | Page 18
Add: 8 + 6
SOLUTION
8 + 6 = 14
Practice Set 5 | Q 1.2 | Page 18
Add: 9 + ( –3)
SOLUTION
9 + ( –3)
= 9 – 3
= 6
Practice Set 5 | Q 1.3 | Page 18
Add: 5 + ( –6)
SOLUTION
5 + ( –6)
= 5 – 6
= –1
Practice Set 5 | Q 1.4 | Page 18
Add: –7 + 2
SOLUTION
–7 + 2 = –5
Practice Set 5 | Q 1.5 | Page 18
Add: –8 + 0
SOLUTION
Page 3
Chapter 3: Integers
PRACTICE SET 4 [PAGE 15]
Practice Set 4 | Q 1 | Page 15
Classify the following numbers as positive numbers and negative numbers.
–5, +4, –2, 7, +26, –49, –37, 19, –25, +8, 5, –4, –12, 27
SOLUTION
The negative numbers are -5, -2, -49, -37, -25, -4, -12
The positive numbers are +4, 7, +26, 19, +8, 5, 27
Practice Set 4 | Q 2 | Page 15
Given below are the temperatures in some cities. Write to them using the proper signs.
Place Shimla Leh Delhi Nagpur
Temperature 7°C above
0°
12°C above
0°
22°C above
0°
31°C above
0°
SOLUTION
The temperature of Shimla is -7 °C.
The temperature of Leh is -12 °C.
The temperature of Delhi is +22 °C.
The temperature of Nagpur is +31 °C.
Practice Set 4 | Q 3.1 | Page 15
Write the number in the following example using the proper signs.
A submarine is at a depth of 512 metres below sea level.
SOLUTION
-512 m
Practice Set 4 | Q 3.2 | Page 15
Write the number in the following example using the proper signs.
The height of Mt Everest, the highest peak in the Himalayas, is 8848 metres.
SOLUTION
8848 m
Practice Set 4 | Q 3.3 | Page 15
Write the number in the following example using the proper signs.
A kite is flying at a distance of 120 metres from the ground.
SOLUTION
120 m
Practice Set 4 | Q 3.4 | Page 15
Write the number in the following example using the proper signs.
The tunnel is at a depth of 2 metres under the ground.
SOLUTION
-2 m
PRACTICE SET 5 [PAGE 18]
Practice Set 5 | Q 1.1 | Page 18
Add: 8 + 6
SOLUTION
8 + 6 = 14
Practice Set 5 | Q 1.2 | Page 18
Add: 9 + ( –3)
SOLUTION
9 + ( –3)
= 9 – 3
= 6
Practice Set 5 | Q 1.3 | Page 18
Add: 5 + ( –6)
SOLUTION
5 + ( –6)
= 5 – 6
= –1
Practice Set 5 | Q 1.4 | Page 18
Add: –7 + 2
SOLUTION
–7 + 2 = –5
Practice Set 5 | Q 1.5 | Page 18
Add: –8 + 0
SOLUTION
–7 + 2 = –5
Practice Set 5 | Q 1.6 | Page 18
Add: –5 + ( –2)
SOLUTION
–5 + ( –2)
= – 5 – 2
= –7
Practice Set 5 | Q 2 | Page 18
Complete the table given below.
+ 8 4 –3 –5
–2 –2 + 8 = +16
6
0
–4
SOLUTION
+ 8 4 –3 –5
–2 –2 + 8 = +6 –2 + 4 = +2 –2 – 3 = –5 –2 – 5 = –7
6 6 + 8 = 14 6 + 4 = 10 6 – 3 = 3 6 – 5 = 1
0 0 + 8 = 8 0 + 4 = 4 0 – 3 = –3 0 – 5 = –5
–4 –4 + 8 = 4 –4 + 4 = 0 –4 – 3 = –7 –4 – 5 = –9
PRACTICE SET 6 [PAGE 19]
Practice Set 6 | Q 1 | Page 19
Write the opposite number of each of the numbers given below.
Number 47 + 52 – 33 – 84 – 21 + 16 – 26 80
Opposite
number
Page 4
Chapter 3: Integers
PRACTICE SET 4 [PAGE 15]
Practice Set 4 | Q 1 | Page 15
Classify the following numbers as positive numbers and negative numbers.
–5, +4, –2, 7, +26, –49, –37, 19, –25, +8, 5, –4, –12, 27
SOLUTION
The negative numbers are -5, -2, -49, -37, -25, -4, -12
The positive numbers are +4, 7, +26, 19, +8, 5, 27
Practice Set 4 | Q 2 | Page 15
Given below are the temperatures in some cities. Write to them using the proper signs.
Place Shimla Leh Delhi Nagpur
Temperature 7°C above
0°
12°C above
0°
22°C above
0°
31°C above
0°
SOLUTION
The temperature of Shimla is -7 °C.
The temperature of Leh is -12 °C.
The temperature of Delhi is +22 °C.
The temperature of Nagpur is +31 °C.
Practice Set 4 | Q 3.1 | Page 15
Write the number in the following example using the proper signs.
A submarine is at a depth of 512 metres below sea level.
SOLUTION
-512 m
Practice Set 4 | Q 3.2 | Page 15
Write the number in the following example using the proper signs.
The height of Mt Everest, the highest peak in the Himalayas, is 8848 metres.
SOLUTION
8848 m
Practice Set 4 | Q 3.3 | Page 15
Write the number in the following example using the proper signs.
A kite is flying at a distance of 120 metres from the ground.
SOLUTION
120 m
Practice Set 4 | Q 3.4 | Page 15
Write the number in the following example using the proper signs.
The tunnel is at a depth of 2 metres under the ground.
SOLUTION
-2 m
PRACTICE SET 5 [PAGE 18]
Practice Set 5 | Q 1.1 | Page 18
Add: 8 + 6
SOLUTION
8 + 6 = 14
Practice Set 5 | Q 1.2 | Page 18
Add: 9 + ( –3)
SOLUTION
9 + ( –3)
= 9 – 3
= 6
Practice Set 5 | Q 1.3 | Page 18
Add: 5 + ( –6)
SOLUTION
5 + ( –6)
= 5 – 6
= –1
Practice Set 5 | Q 1.4 | Page 18
Add: –7 + 2
SOLUTION
–7 + 2 = –5
Practice Set 5 | Q 1.5 | Page 18
Add: –8 + 0
SOLUTION
–7 + 2 = –5
Practice Set 5 | Q 1.6 | Page 18
Add: –5 + ( –2)
SOLUTION
–5 + ( –2)
= – 5 – 2
= –7
Practice Set 5 | Q 2 | Page 18
Complete the table given below.
+ 8 4 –3 –5
–2 –2 + 8 = +16
6
0
–4
SOLUTION
+ 8 4 –3 –5
–2 –2 + 8 = +6 –2 + 4 = +2 –2 – 3 = –5 –2 – 5 = –7
6 6 + 8 = 14 6 + 4 = 10 6 – 3 = 3 6 – 5 = 1
0 0 + 8 = 8 0 + 4 = 4 0 – 3 = –3 0 – 5 = –5
–4 –4 + 8 = 4 –4 + 4 = 0 –4 – 3 = –7 –4 – 5 = –9
PRACTICE SET 6 [PAGE 19]
Practice Set 6 | Q 1 | Page 19
Write the opposite number of each of the numbers given below.
Number 47 + 52 – 33 – 84 – 21 + 16 – 26 80
Opposite
number
SOLUTION
Number 47 + 52 – 33 – 84 – 21 + 16 – 26 80
Opposite
number
– 47 – 52 + 33 + 84 + 21 –16 + 26 – 8
PRACTICE SET 7 [PAGE 19]
Practice Set 7 | Q 1 | Page 19
Write the proper sings > , < or = in the boxes below.
(1) –4 ____ 5 (2) 8 ___ –10 (3) +9 ____ +9 (4) – 6 ___ 0
(5) 7 ______ 4 (6) 3 ___ 0 (7) –7 ___ 7 (8) –12 ____ 5
(9) –2 _____ –
8
(10) –1 __ –2 (11) 6 ___ -3 (12) –14
____ –14
SOLUTION
(1) -4 < 5 (2) 8 > -10 (3) +9 = +9 (4) -6 < 0
(5) 7 > 4 (6) 3 > 0 (7) -7 < 7 (8) -12 < 5
(9) -2 > -8 (10) -1 > -2 (11) 6 > -3 (12) -14 = -14
PRACTICE SET 8 [PAGE 20]
Practice Set 8 | Q 1 | Page 20
Subtract the numbers in the top row from the numbers in the first column and write the
proper number in each empty box.
– 6 9 –4 –5 0 +7 –8 –3
3 3 – 6 = –3
8 8 - (-5) = 13
–3
–2
Page 5
Chapter 3: Integers
PRACTICE SET 4 [PAGE 15]
Practice Set 4 | Q 1 | Page 15
Classify the following numbers as positive numbers and negative numbers.
–5, +4, –2, 7, +26, –49, –37, 19, –25, +8, 5, –4, –12, 27
SOLUTION
The negative numbers are -5, -2, -49, -37, -25, -4, -12
The positive numbers are +4, 7, +26, 19, +8, 5, 27
Practice Set 4 | Q 2 | Page 15
Given below are the temperatures in some cities. Write to them using the proper signs.
Place Shimla Leh Delhi Nagpur
Temperature 7°C above
0°
12°C above
0°
22°C above
0°
31°C above
0°
SOLUTION
The temperature of Shimla is -7 °C.
The temperature of Leh is -12 °C.
The temperature of Delhi is +22 °C.
The temperature of Nagpur is +31 °C.
Practice Set 4 | Q 3.1 | Page 15
Write the number in the following example using the proper signs.
A submarine is at a depth of 512 metres below sea level.
SOLUTION
-512 m
Practice Set 4 | Q 3.2 | Page 15
Write the number in the following example using the proper signs.
The height of Mt Everest, the highest peak in the Himalayas, is 8848 metres.
SOLUTION
8848 m
Practice Set 4 | Q 3.3 | Page 15
Write the number in the following example using the proper signs.
A kite is flying at a distance of 120 metres from the ground.
SOLUTION
120 m
Practice Set 4 | Q 3.4 | Page 15
Write the number in the following example using the proper signs.
The tunnel is at a depth of 2 metres under the ground.
SOLUTION
-2 m
PRACTICE SET 5 [PAGE 18]
Practice Set 5 | Q 1.1 | Page 18
Add: 8 + 6
SOLUTION
8 + 6 = 14
Practice Set 5 | Q 1.2 | Page 18
Add: 9 + ( –3)
SOLUTION
9 + ( –3)
= 9 – 3
= 6
Practice Set 5 | Q 1.3 | Page 18
Add: 5 + ( –6)
SOLUTION
5 + ( –6)
= 5 – 6
= –1
Practice Set 5 | Q 1.4 | Page 18
Add: –7 + 2
SOLUTION
–7 + 2 = –5
Practice Set 5 | Q 1.5 | Page 18
Add: –8 + 0
SOLUTION
–7 + 2 = –5
Practice Set 5 | Q 1.6 | Page 18
Add: –5 + ( –2)
SOLUTION
–5 + ( –2)
= – 5 – 2
= –7
Practice Set 5 | Q 2 | Page 18
Complete the table given below.
+ 8 4 –3 –5
–2 –2 + 8 = +16
6
0
–4
SOLUTION
+ 8 4 –3 –5
–2 –2 + 8 = +6 –2 + 4 = +2 –2 – 3 = –5 –2 – 5 = –7
6 6 + 8 = 14 6 + 4 = 10 6 – 3 = 3 6 – 5 = 1
0 0 + 8 = 8 0 + 4 = 4 0 – 3 = –3 0 – 5 = –5
–4 –4 + 8 = 4 –4 + 4 = 0 –4 – 3 = –7 –4 – 5 = –9
PRACTICE SET 6 [PAGE 19]
Practice Set 6 | Q 1 | Page 19
Write the opposite number of each of the numbers given below.
Number 47 + 52 – 33 – 84 – 21 + 16 – 26 80
Opposite
number
SOLUTION
Number 47 + 52 – 33 – 84 – 21 + 16 – 26 80
Opposite
number
– 47 – 52 + 33 + 84 + 21 –16 + 26 – 8
PRACTICE SET 7 [PAGE 19]
Practice Set 7 | Q 1 | Page 19
Write the proper sings > , < or = in the boxes below.
(1) –4 ____ 5 (2) 8 ___ –10 (3) +9 ____ +9 (4) – 6 ___ 0
(5) 7 ______ 4 (6) 3 ___ 0 (7) –7 ___ 7 (8) –12 ____ 5
(9) –2 _____ –
8
(10) –1 __ –2 (11) 6 ___ -3 (12) –14
____ –14
SOLUTION
(1) -4 < 5 (2) 8 > -10 (3) +9 = +9 (4) -6 < 0
(5) 7 > 4 (6) 3 > 0 (7) -7 < 7 (8) -12 < 5
(9) -2 > -8 (10) -1 > -2 (11) 6 > -3 (12) -14 = -14
PRACTICE SET 8 [PAGE 20]
Practice Set 8 | Q 1 | Page 20
Subtract the numbers in the top row from the numbers in the first column and write the
proper number in each empty box.
– 6 9 –4 –5 0 +7 –8 –3
3 3 – 6 = –3
8 8 - (-5) = 13
–3
–2
SOLUTION
– 6 9 –4 –5 0 +7 –8 –3
3 3 – 6 = –
3
3 – 9 = –
6
3 + 4 =
7
3 + 5 = 8 3 – 0 = 3 3 – 7 = –4 3 + 8 =
11
3 + 3 =
6
8 8 – 6 = 2 8 – 9 = –
1
8 + 4 =
12
8 – (– 5) =
13
8 – 0 = 8 8 – 7 = 1 8 + 8 =
16
8 + 3 =
11
–
3
–3 – 6 =
–9
–3 – 9 =
–12
–3 + 4
= 1
–3 + 5 = 2 –3 – 0 =
–3
–3 – 7 = –
10
–3 + 8
= 5
–3 + 3
= 0
–
2
–2 – 6 =
–8
–2 – 9 =
–11
– 2 + 4
= 2
–2 + 5 = 3 –2 – 0 =
–2
–2 – 7 = –
9
–2 + 8
= 6
–2 + 3
= 1
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