KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex 10.5

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Students can Download Class 8 Maths Chapter 10 Exponents Ex 10.5 Questions and Answers, Notes Pdf, KSEEB Solutions for Class 8 Maths helps you to revise the complete Karnataka State Board Syllabus and to clear all their doubts, score well in final exams.

Karnataka State Syllabus Class 8 Maths Chapter 10 Exponents Ex 10.5

Question 1.
Simply
i.  \(\frac{6^{8} \times 5^{3}}{10^{3} \times 3^{4}}\)
Answer:
KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex 10.5 1

ii. \frac{(15)^{-3} \times(-12)^{4}}{5^{-6} \times(36)^{2}}
Answer:
KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex 10.5 2

iii. \frac{(0.22)^{4} \times(0.222)^{3}}{(0.2)^{5} \times(0.2222)^{2}}
Answer:
KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex 10.5 3

KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex 10.5

Question 2.
Is ∴ \frac{\left(10^{4}\right)^{3}}{5^{13}} an integer? Justify your answer.
Answer:
KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex 10.5 4

Question 3.
Which is larger (100)4 or (125)3?
Answer:
(100)4 = [(10)2]4 = 102×4 =108
= (2 x 5)8 = 28 x 58
(125)3 = (53)3
= 53×3 = 59
We know that 5 x 58 = 59
In the exponent 28 x 58, 28 > 5
∴ 28 x 58 > 5 x 5s
∴ (100)4 > (125)3

KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex 10.5