Students can download Chapter 8 Decimals Ex 8.4 KSEEB Solutions for Class 6 Maths helps you to revise the complete syllabus.

## Karnataka State Syllabus Class 6 Maths Chapter 8 Decimals Ex 8.4

Question 1.

Express as rupees using decimals.

a) 5 paise

b) 75 paise

c) 20 paise

d) 50 rupees 90 paise

e) 725 paise.

Solution:

W.K.T. 1 Rupee = 100 paise

a) 5 paise = \(\frac{5}{100}\) rupees = 0.05 Re

b) 75 paise = \(\frac{75}{100}\)rupees = 0.75 Re

c) 20 paise = \(\frac{20}{100}\) rupees = 0.20 Re

d) 50 rupees 90 paise = \(\left(50+\frac{90}{100}\right)\) rupees

e) 725 paise = \(\frac{725}{100}\) rupees = 7.25

Question 2.

Express as metres using decimals.

a) 15 cm

b) 6 cm

c) 2 m 45 cm

d) 9 m 7 cm

e) 416 cm

Solution:

we know that 1 metre = 100 cm

a) 15 cm = \(\frac{15}{100}\) m = 0.15 m

b) 6 cm = \(\frac{6}{100}\) m = 0.06 m

c) 2 m 45 cm = \(\left(2+\frac{45}{100}\right)\) m = 2.45 m

d) 9m 7 cm = \(\left(9+\frac{7}{100}\right)\) m = 9.07 m

e) 416 cm = \(\frac{419}{100}\) m = 4.19 m

Question 3.

Express as cm using decimals.

a) 5 mm

b) 60 mm

c) 164 mm

d) 9 cm 8 mm

e) 93 mm

Solution:

a) 5mm = \(\frac{5}{10}\) cm = 0.5 cm

b) 60 mm = \(\frac{60}{10}\) cm = 6.0 cm

c) 164 mm = \(\frac{164}{10}\) cm = 16.4 cm

d) 9 cm 8 mm = \(\left(9+\frac{8}{10}\right)\) cm = 9.8 cm

e) 93 mm = \(\frac{93}{10}\) cm = 9.3 cm

Question 4.

Express as km using decimals.

a) 8 m

b) 88 m

c) 8888 m

d) 70 km 5 m

Solution:

a) 8 m = \(\frac{8}{1000}\) = 0.008 km

b) 88 m = \(\frac{88}{1000}\) = 8.888 km

c) 8888 m = \(\frac{8888}{1000}\) km = 8.888 km

d) 70 km 5 m = \(\left(70+\frac{5}{1000}\right)\) km = 70.005 km

Question 5.

Express as kg using decimals.

a) 2g

b) 100 g

c) 3750 g

d) 5 kg 8 g

e) 26 kg 50 g

Solution:

W.K.T. 1 kg = 1000 grams

a) 2g = \(\frac{2}{1000}\) kg = 0.002 kg

b) 100g = \(\frac{100}{1000}\) g = 0.10 kg

c) 3750 g = \(\frac{3750}{1000}\) kg = 3.750 kg

d) 5 kg 8 g = \(\left(5+\frac{8}{1000}\right)\) kg = 5.008 kg

e) 26 kg 50 g = \(\left(26+\frac{50}{1000}\right)\) kg = 26.050 kg