Question and Answers for Class 6 Maths Exercise 8.2 Chapter 8 Decimals
1. Express as rupees using decimals:
Solution:
(a) 5 paise
= 5 / 100
= ₹0.05 (since 100 paise = ₹1)
(b) 75 paise
= 75 / 100
= ₹0.75 (since 100 paise = ₹1)
(c) 20 paise
= 20 / 100
= ₹0.20 (since 100 paise = ₹1)
(d) 50 rupees 90 paise
= ₹50 + (90 / 100)
= ₹50.90 (since 100 paise = ₹1)
(e) 725 paise
= 725 / 100
= ₹7.25 (since 100 paise = ₹1)
2. Express as metres using decimals:
Solution:
(a) 15 cm
= 15 / 100
= 0.15 m (since 100 cm = 1 m)
(b) 6 cm
= 6 / 100
= 0.06 m (since 100 cm = 1 m)
(c) 2 m 45 cm
= 2 m + (45 / 100) m
= 2.45 m (since 100 cm = 1 m)
(d) 9 m 7 cm
= 9 m + (7 / 100) m
= 9.07 m (since 100 cm = 1 m)
(e) 419 cm
= 419 / 100 meters
= 4.19 m (since 100 cm = 1 m)
3. Express as cm using decimals:
Solution:
(a) 5 mm
= 5 / 10
= 0.5 cm (since 10 mm = 1 cm)
(b) 60 mm
= 60 / 10
= 6 cm (since 10 mm = 1 cm)
(c) 164 mm
= 164 / 10
= 16.4 cm (since 10 mm = 1 cm)
(d) 9 cm 8 mm
= 9 cm + (8 / 10)
= 9.8 cm (since 10 mm = 1 cm)
(e) 93 mm
= 93 / 10
= 9.3 cm (since 10 mm = 1 cm)
4. Express as km using decimals:
Solution:
(a) 8 m
= 8 / 1000
= 0.008 km (since 1000 m = 1 km)
(b) 88 m
= 88 / 1000
= 0.088 km (since 1000 m = 1 km)
(c) 8888 m
= 8888 / 1000
= 8.888 km (since 1000 m = 1 km)
(d) 70 km 5 m
= 70 km + (5 / 1000)
= 70.005 km (since 1000 m = 1 km)
5. Express as kg using decimals:
Solution:
(a) 2 g
= 2 / 1000
= 0.002 kg (since 1000 g = 1 kg)
(b) 100 g
= 100 / 1000
= 0.1 kg (since 1000 g = 1 kg)
(c) 3750 g
= 3750 / 1000
= 3.75 kg (since 1000 g = 1 kg)
(d) 5 kg 8 g
= 5 kg + (8 / 1000)
= 5.008 kg (since 1000 g = 1 kg)
(e) 26 kg 50 g
= 26 kg + (50 / 1000)
= 26.05 kg (since 1000 g = 1 kg)
