CBSE Class 6th ( VI) Mathematics Chapter 8. Decimals: Exercise 8.4

1. Express as rupees using decimals.

1. 5 paise
2. 75 paise
3. 20 paise
4. 50 rupees 90 paise
5. 725 paise

Answer:

	5
(a). 5 paise = Re		= Re 0.05
	100

	75
(b). 75 paise = Re		= Re 0.75
	100

	20
(c). 20 paise = Re		= Re 0.20
	100

	50
(d). 50 paise = Re		= Re 0.50
	100

	725
(e). 725 paise = Re		= Re 7.25
	100

2. Express as metres using decimals.

1. 15 cm
2. 6 cm
3. 2 m 45 cm
4. 9 m 7 cm
5. 419 cm

Answer:

	15
(a). 15 cm =		m = 0.15 m
	100

	6
(b). 6 cm =		m = 0.06 m
	100

	245
(c). 2m 45 cm =		m = 2.45 m
	100

	97
(d). 9m 7cm =		m = 0.97 m
	100

	419
(e). 419 cm =		m = 4.19 m
	100

3. Express as cm using decimals.

1. 5 mm
2. 60 mm
3. 164 mm
4. 9 cm 8 mm
5. 93 mm

Answer:

	15
(a). 5 mm =		cm = 0.5 cm
	100

	60
(b). 60 mm =		cm = 6.0 cm
	100

	164
(c). 164 mm =		cm = 16.4 cm
	100

	98
(d). 9 cm 8 mm =		cm = 9.8 cm
	100

	93
(e). 93 mm =		cm = 9.3 cm
	100

4. Express as km using decimals.

1. 8 m
2. 88 m
3. 8888 m
4. 70 km 5 m

Answer:

	8
(a). 8 m =		km = 0.008 km
	1000

	88
(b). 88 m =		km = 0.088 km
	1000

	8888
(c). 8888 m =		km = 8.888 km
	1000

	70005
(d). 70 km 5 m = 70 ×1000 + 5 = 70005 m =		km = 70.005 km
	1000

5. Express as kg using decimals.

1. 2 g
2. 100 g
3. 3750 g
4. 5 kg 8 g
5. 26 kg 50 g

Answer:

	2
(a). 2 g =		kg = 0.002 kg
	1000

	100
(b). 100 g =		kg = 0.1 kg
	1000

	3750
(c). 3750 g =		kg = 3.750 kg
	1000

	5008
(d). 5 kg 8 g = 5 × 1000 + 8 g = 1008 g =		kg = 5.008 kg
	1000

	2
(e). 26 kg 50 g = 26 × 1000 + 50 g = 26050 g =		kg = 26.05 kg
	1000