KSEEB Solutions for Class 6 Maths Chapter 8 Decimals Ex 8.4

Students can Download Chapter 8 Decimals Ex 8.4 Questions and Answers, Notes Pdf, KSEEB Solutions for Class 6 Maths helps you to revise the complete Karnataka State Board Syllabus and score more marks in your examinations.

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