NCERT Solutions Class 6 Maths
Chapter – 8 (Decimals)
The NCERT Solutions in English Language for Class 6 Mathematics Chapter – 8 Decimals Exercise 8.4 has been provided here to help the students in solving the questions from this exercise.
Chapter 8: Decimals
- NCERT Solution Class 6 Maths Exercise – 8.1
- NCERT Solution Class 6 Maths Exercise – 8.2
- NCERT Solution Class 6 Maths Exercise – 8.3
- NCERT Solution Class 6 Maths Exercise – 8.5
- NCERT Solution Class 6 Maths Exercise – 8.6
Exercise – 8.4
1. Express as rupees using decimals.
(a) 5 paise
(b) 75 paise
(c) 20 paise
(d) 50 rupees 90 paise
(e) 725 paise
Solutions:
We know that there are 100 paise in 1 rupees
(a) 5 paise =
(b) 75 paise =
(c) 20 paise =
(d) 50 rupees 90 paise = 50 rupees +
= 50 + 0.90 rupees
= Rupees 50.90
(e) 725 paise =
= 7 rupees + 0.25 rupees
= Rupees 7.25
2. Express as metres using decimals.
(a) 15 cm
(b) 6 cm
(c) 2 m 45 cm
(d) 9 m 7 cm
(e) 419 cm
Solutions:
We know that there are 100 cm in 1 metre.
(a) 15 cm =
(b) 6 cm =
(c) 2 m 45 cm = 2 m +
(d) 9 m 7 cm = 9 m +
(e) 419 cm =
= 4 + 0.19 m = 4.19 m
3. Express as cm using decimals
(a) 5 mm
(b) 60 mm
(c) 164 mm
(d) 9 cm 8 mm
(e) 93 mm
Solutions:
We know that there are 10 mm in 1 cm
(a) 5 mm =
(b) 60 mm =
(c) 164 mm =
= 16 cm + 0.4 cm
= 16.4 cm
(d) 9 cm 8 mm = 9 cm +
= 9 cm + 0.8 cm
= 9.8 cm
(e) 93 mm =
= 9 cm + 0.3 cm
= 9.3 cm
4. Express as km using decimals.
(a) 8 m
(b) 88 m
(c) 8888 m
(d) 70 km 5 m
Solutions:
We know that there are 1000 metres in 1 km.
(a) 8 m =
(b) 88 m =
(c) 8888 m =
= 8 km + 0.888 km
= 8.888 km.
(d) 70 km 5 m = 70 km +
= 70 km + 0.005 km
= 70.005 km
5. Express as kg using decimals.
(a) 2 g
(b) 100 g
(c) 3750 g
(d) 5 kg 8 g
(e) 26 kg 50 g
Solutions:
We know that there are 1000 grams in 1 kg.
(a) 2 g =
(b) 100 g =
(c) 3750 g =
= 3 kg + 0.750 kg
= 3.750 kg
(d) 5 kg 8 g = 5 kg +
= 5 kg + 0.008 kg
= 5.008kg
(e) 26 kg 50 g = 26 kg +
= 26 kg + 0.050 kg
= 26.050kg