| Exercise 8.1 Exercise 8.2 Exercise 8.3 Exercise 8.4 Exercise 8.5 Exercise 8.6 |
NCERT Answers for Class 6 Maths Chapter 8 Decimals Exercise 8.5
Page 179
Ex 8.5 Class 6 Maths Question 1. 1. Find the sum in each of the following :
(a) 0.007 + 8.5 + 30.08
(b) 15 + 0.632 + 13.8
(c) 27.076 + 0.55 + 0.004
(d) 25.65 + 9.005 + 3.7
(e) 0.75 + 10.425 + 2
(f) 280.69 + 25.2 + 38
Answer
(a) Sum of 0.007 + 8.5 + 30.08
0.007
8.500
+ 30.080
_______
38.587
_______
(b) Sum of 15 + 0.632 + 13.8
15.000
0.632
+ 13.800
_______
29.432
_______
(c) Sum of 27.076 + 0.55 + 0.004
27.076
0.550
+ 0.004
________
27.630
________
(d) Sum of 25.65 + 9.005 + 3.7
25.650
9.005
+ 3.700
_______
38.355
_______
(e) Sum of 0.75 + 10.425 + 2
0.750
10.425
+ 2.000
_______
13.175
_______
(f) Sum of 280.69 + 25.2 + 38
280.69
25.20
+ 38.00
________
343.89
________
Ex 8.5 Class 6 Maths Question 2. Rashid spent ₹ 35.75 for Maths book and ₹ 32.60 for Science book. Find the total amount spent by Rashid.
Answer
Cost of Maths book = ₹ 35.75
Cost of Science book = ₹ 32.60
Total amount spent by Rashid is
35.75
+ 32.60
_______
68.35
_______
Therefore Total amount of money spent by Rashid is ₹ 68.35
Ex 8.5 Class 6 Maths Question 3. Radhika’s mother gave her ₹ 10.50 and her father gave her ₹ 15.80, find the total amount given to Radhika by the parents.
Answer
Amount given by Radhika’s mother = ₹ 10.50
Amount given by Radhika’s father = ₹ 15.80
Total amount given by her parents
10.50
+ 15.80
________
26.30
________
Therefore Total amount of money given by Radhika’s parents is ₹ 26.30
Ex 8.5 Class 6 Maths Question 4. Nasreen bought 3 m 20 cm cloth for her shirt and 2 m 5 cm cloth for her trouser. Find the total length of cloth bought by her.
Answer
Cloth of shirt = 3 m 20 cm
Cloth of trouser = 2 m 5 cm
Total length of cloth is
3.20
+ 2.05
________
5.25
_________
Therefore Total length of cloth bought by Nasreen is 5.25 m
Ex 8.5 Class 6 Maths Question 5. Naresh walked 2 km 35 m in the morning and 1 km 7 m in the evening. How much distance did he walk in all?
Answer
Distance walked by Naresh in the morning = 2 km 35 m
= [(2 + 35 /1000)] km
= 2.035 km
Distance walked by him in the evening = 1 km 7 m
= [(1 + 7 / 1000)] km
= 1.007 km
Total distance walked by Naresh is
2.035
+ 1.007
_______
3.042
________
Therefore Total distance walked by Naresh is 3.042 km
Ex 8.5 Class 6 Maths Question 6. Sunita travelled 15 km 268 m by bus, 7 km 7 m by car and 500 m on foot in order to reach her school. How far is her school from her residence?
Answer
Distance travelled by bus = 15 km 268 m
= [(15 + 268 / 1000)] km
= 15.268 km
Distance travelled by car = 7 km 7 m
= [(7 + 7 / 1000)] km
= 7.007 km
Distance walked by Sunita = 500 m
= 500 / 1000
= 0.500 km
Total distance of school from her residence is
15.268
7.007
+ 0.500
________
22.775
________
Therefore Total distance of the school from her residence is 22.775 km
Ex 8.5 Class 6 Maths Question 7. Ravi purchased 5 kg 400 g rice, 2 kg 20 g sugar and 10 kg 850g flour. Find the total weight of his purchases.
Answer
Weight of rice = 5 kg 400 g
= [(5 + 400 / 1000)] kg
= 5.400 kg
Weight of sugar = 2 kg 20 g
= [(2 + 20 / 1000)] kg
= 2.020 kg
Weight of flour = 10 kg 850 g
= [(10 + 850 / 1000)] kg
= 10.850 kg
Total weight of his purchases is
5.400
2.020
+ 10.850
________
18.270
________
Therefore Total weight of his purchases is 18.270 kg