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 8.4**

**Page 177**

**Ex 8.4 Class 6 Maths Question 1. Express as rupees using decimals.**

**(a) 5 paise (b) 75 paise (c) 20 paise**

**(d) 50 rupees 90 paise (e) 725 paise**

**Answer**

We know that there are 100 paise in 1 rupees

**(a)** 5 paise = 5 / 100 rupees

= Rupess 0.05

**(b)** 75 paise = 75 / 100 rupees

= Rupees 0.75

**(c)** 20 paise = 20 / 100 rupees

= Rupees 0.20

**(d)** 50 rupees 90 paise = [(50 + 90 / 100)] rupees

= Rupees 50.90

**(e)** 725 paise = 725 / 100 rupees

= Rupees 7.25

**Ex 8.4 Class 6 Maths Question 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**

**Answer**

We know that there are 100 cm in 1 metre

**(a)** 15 cm = 15 / 100 m

= 0.15 m

**(b)** 6 cm = 6 / 100 m

= 0.06 m

**(c)** 2 m 45 cm = [(2 + 45 / 100)] m

= 2.45 m

**(d)** 9 m 7 cm = [(9 + 7 / 100)] m

= 9.07 m

**(e)** 419 cm = 419 / 100 m

= 4.19 m

**Ex 8.4 Class 6 Maths Question 3. Express as cm using decimals. (a) 5 mm (b) 60 mm (c) 164 mm (d) 9 cm 8 mm (e) 93 mm**

**Answer**

We know that there are 10 mm in 1 cm

**(a)** 5 mm = 5 / 10 cm

= 0.5 cm

**(b)** 60 mm = 60 / 10 cm

= 6.0 cm

**(c)** 164 mm = 164 / 10 cm

= 16.4 cm

**(d)** 9 cm 8 mm = [(9 + 8 / 10)] cm

= 9.8 cm

**(e)** 93 mm = 93 / 10 cm

= 9.3 cm

**Ex 8.4 Class 6 Maths Question 4. Express as km using decimals. (a) 8 m (b) 88 m **

**(c) 8888 m (d) 70 km 5 m**

**Answer**

We know that there are 1000 metres in 1 km

**(a)** 8 m = 8 / 1000 km

= 0.008 km

**(b)** 88 m = 88 / 1000 km

= 0.088 km

**(c)** 8888 m = 8888 / 1000 km

= 8.888 km

**(d)** 70 km 5 m = [(70 + 5 / 1000)] km

= 70.005 km

**Ex 8.4 Class 6 Maths Question 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**

**Answer**

We know that there are 1000 grams in 1 kg

**(a)** 2 g = 2 / 1000 kg

= 0.002 kg

**(b)** 100 g = 100 / 1000 kg

= 0.1 kg

**(c)** 3750 g = 3750 / 1000 kg

= 3.750 kg

**(d)** 5 kg 8 g = [(5 + 8 / 1000)] kg

= 5.008 kg

**(e)** 26 kg 50 g = [(20 + 50 / 1000)] kg

= 26.050 kg

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