DECIMALS
EXERCISE – 8.6
EX 8.6 QUESTION 1.
Subtract:
(a) ₹ 18.25 from ₹ 20.75
(b) 202.54 m from 250 m
(c) ₹ 5.36 from ₹ 8.40
(d) 2.051 km from 5.206 km
(e) 0.314 kg from 2.107 kg
Solution:
(a) ₹ 20.75 – ₹ 18.75
20.75
– 18.25
__________
2.50
___________
₹ 2.50
(b) 250 m – 202.54 m
250.00
– 202.54
___________
47.46
____________
47.46 m
(c) ₹ 8.40 – ₹ 5.36
8.40
– 5.36
_________
3.04
_________
₹ 3.04
(d) 5.206 km – 2.051 km
5.206
– 2.051
__________
3.155
__________
3.155 km
(e) 2.107 kg – 0.314 kg
2.107
– 0.314
_________
1.793
__________
1.793 kg
EX 8.6 QUESTION 2.
Find the value of:
(a) 9.756 – 6.28
(b) 21.05 – 15.27
(c) 18.5 – 6.79
(d) 11.6 – 9.847
Solution:
(a) 9.756
– 6.280
_________
3.476
_________
(b) 21.05
– 15.27
___________
5.78
____________
(c) 18.50
– 6.79
___________
11.71
___________
(d) 11.600
– 9.847
____________
1.753
____________
EX 8.6 QUESTION 3.
Raju bought a book for ₹ 35.65. He gave ₹ 50 to the shopkeeper. How much money did he get back from the shopkeeper?
Solution:
Money is given to shopkeeper = ₹ 50.00
Price of the book = ₹ 35.65
∴ Money left with Raju is
50.00
– 35.65
___________
14.35
___________
Hence, money left with Raju is ₹ 14.35
EX 8.6 QUESTION 4.
Rani had ₹ 18.50. She bought one ice cream for ₹ 11.75. How much money does she have now?
Solution:
Money with Rani = ₹ 18.50
Price of an ice cream = ₹ 11.75
Hence, money left with her is
18.50
– 11.75
__________
6.75
___________
∴ Money left with Rani is ₹ 6.75
EX 8.6 QUESTION 5.
Tina had 20 m 5 cm long cloth. She cuts 4 m 50 cm length of cloth from this for making a curtain. How much cloth is left with her?
Solution:
Length of cloth = 20 m 5 cm
= 20.05 m
Length of cloth to make a curtain = 4 m 50 cm
= 4.50 m
Thus the length of cloth left with her
20.05
– 4.50
________
15.55
________
∴ The length of the remaining cloth left with her = 15.55 m
EX 8.6 QUESTION 6.
Namita travels 20 km 50 m every day. Out of this she travels 10 km 200 m by bus and the rest by auto. How much distance does she travel by auto?
Solution:
distance travelled by Namita = 20 km 50 m
= 20.050 km
Distance travelled by bus = 10 km 200 m
= 10.200 km
Distance travelled by auto = Total distance travelled – Distance travelled by bus
∴ Distance to be travelled by auto
20.050
– 10.200
________
9.850
________
∴ Namita travelled 9.850 km by auto = 9.850 km.
EX 8.6 QUESTION 7.
Aakash bought vegetables weighing 10 kg. Out of this, 3 kg 500 g is onions, 2 kg 75 g is tomatoes and the rest is potatoes. What is the weight of the potatoes?
Solution:
Total weight of vegetables bought by Aakash= 10.000 kg
Weight of onions = 3 kg 500 g
= 3.500 kg
Weight of tomatoes = 2 kg 75 g
= 2.075 kg
Weight of potatoes =Total weight of vegetables bought (weight of onions + weight of tomatoes)
= 10.000 – (3.500 + 2.075)
3.500
+ 2.075
________
5.575
________
10.000
– 5.575
_________
4.425
_________
∴Weight of the potatoes = 4.425 kg.
