Question and Answers for Class 6 Maths Exercise 8.3 Chapter 8 Decimals
1. Find the sum in each of the following:
Solution:
(a) 0.007 + 8.5 + 30.08
= 38.587
(b) 15 + 0.632 + 13.8
= 29.432
(c) 27.076 + 0.55 + 0.004
= 27.63
(d) 25.65 + 9.005 + 3.7
= 38.355
(e) 0.75 + 10.425 + 2
= 13.175
(f) 280.69 + 25.2 + 38
= 343.89
2. Rashid spent ₹ 35.75 for Maths book and ₹ 32.60 for Science book. Find the total amount spent by Rashid.
Solution:
Amount spent on Maths book = ₹ 35.75
Amount spent on Science book = ₹ 32.60
Total amount spent
= ₹ 35.75 + ₹ 32.60
= ₹ 68.35
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.
Solution:
Amount given by mother = ₹ 10.50
Amount given by father = ₹ 15.80
Total amount given
= ₹ 10.50 + ₹ 15.80
= ₹ 26.30
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.
Solution:
Length of cloth for shirt = 3 m 20 cm = 3.20 m (20 cm = 0.20 m)
Length of cloth for trouser = 2 m 5 cm = 2.05 m (5 cm = 0.05 m)
Total length of cloth
= 3.20 m + 2.05 m
= 5.25 m
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?
Solution:
Distance walked in the morning = 2 km 35 m = 2.035 km (35 m = 0.035 km)
Distance walked in the evening = 1 km 7 m = 1.007 km (7 m = 0.007 km)
Total distance walked
= 2.035 km + 1.007 km
= 3.042 km
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?
Solution:
Distance travelled by bus = 15 km 268 m = 15.268 km (268 m = 0.268 km)
Distance travelled by car = 7 km 7 m = 7.007 km (7 m = 0.007 km)
Distance travelled on foot = 500 m = 0.500 km
Total distance to school
= 15.268 km + 7.007 km + 0.500 km
= 22.775 km
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.
Solution:
Weight of rice = 5 kg 400 g = 5.400 kg (400 g = 0.400 kg)
Weight of sugar = 2 kg 20 g = 2.020 kg (20 g = 0.020 kg)
Weight of flour = 10 kg 850 g = 10.850 kg (850 g = 0.850 kg)
Total weight of purchases
= 5.400 kg + 2.020 kg + 10.850 kg
= 18.270 kg
