# Decimals – Class 6 Maths/ Exercise 8.4/ NCERT Solutions

**Chapter 8 of CBSE/NCERT Class 6 Mathematics is about Decimals. In this lesson you can find out text book solutions of Decimals Exercise 8.4.**

**CBSE CLASS 6 MATHEMATICSDecimals – Chapter 8/ Exercise 8.4 / NCERT Solutions.**

**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 100 paise = 1 rupee

Therefore, 1 paise = 1/100 rupee = 0.01 rupee.

a) 5 paise = 0.05 rupee

b) 75 paise = 0.75 rupee

c) 20 paise = 0.20 rupee

d) 50 rupees 90 paise = 50 + 90 paise = 50 + 0.90 = 50.90 rupees

e) 725 paise = 7.25 rupees**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 100 cm = 1 m

Therefore, 1 cm = 1/100 m = 0.01 m

a) 15 cm = 0.15 m

b) 6 cm = 0.06 m

c) 2m 45 cm = 2m + 45 cm = 2 m + 0.45 m = 2.45 m

d) 9 m 7 cm = 9 m +7 cm = 9 m + 0.07 m = 9.07 m

e) 419 cm = 4.19 m**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 10 mm = 1 cm

Therefore, 1 mm = 1/10 cm = 0.1 cm

a) 5 mm = 0.5 cm

b) 60 mm = 6 cm

c) 164 mm = 1.64 cm

d) 9 cm 8 mm = 9cm + 8 mm = 9 cm + 0.8 cm = 9.8 cm

e) 93 mm= 9.3 cm**Express as km using decimals.**

a) 8 m

b) 88 m

c) 8888 m

d) 70 km 5 m

Answer:

We know that 1000 m = 1 km

Therefore, 1 m = 1/1000 km = 0.001 km

a) 8 m = 0.008 km

b) 88 m = 0.088 km

c) 8888 m = 8.888 km

d) 70 km 5 m = 70 km + 5 m = 70 km + 0.005 km = 70.005 km**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 1000g = 1 kg

Therefore, 1 g = 1/1000 kg = 0.001 kg

a) 2 g = 0.002 kg

b) 100 g = 0.100 kg

c) 3750 g = 3.750 kg

d) 5 kg 8 g = = 5 kg + 8 g = 5 kg + 0.008 kg = 5.008 kg

e) 26 kg 50 g = 26 kg + 50 g = 26 kg + 0.050 kg = 26.050 kg