ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1

Question 1.
Evaluate:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q1.1
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q1.2

Question 2.
Simplify:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q2.1
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q2.2
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q2.3
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q2.4
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q2.5

Question 3.
Find the multiplicative inverse of the following:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q3.1
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q3.2
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q3.3

Question 4.
(i) Express 16-2 as a power with base 2.
(ii) Express 125-4 as a power with base 5.
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q4.1

Question 5.
Write the following numbers in expanded form using exponents:
(i) 2789.453
(ii) 3007.805
Solution:
(i) 2789.453 = 2 × 103 + 7 × 102 + 8 × 101 + 9 × 100
+ 4 × 10-1 + 5 × 10-2 + 3 × 10-3
(ii) 3007.805 = 3 × 103 + 7 × 100 + 8 × 10-1 + 5 × 10-3

Question 6.
Simplify and write in exponential form with positive exponent:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q6.1
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q6.2
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q6.3
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q6.4
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q6.5

Question 7.
Simplify and write the following in exponential form:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q7.1
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q7.2
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q7.3

Question 8.
Simplify and write in exponential form with negative exponent:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q8.1
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q8.2
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q8.3
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q8.4
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q8.5

Question 9.
Simplify:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q9.1
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q9.2
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q9.3

Question 10.
By what number should \(\left( \frac { 3 }{ -2 } \right) ^{ -3 }\) be divided to get \(\left( \frac { 2 }{ 3 } \right) ^{ 2 }\) ?
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q10.1

Question 11.
Find the value of m for which 9m ÷ 3-2 = 94.
Solution:
9m ÷ 3-2 = 94
⇒ (32)m ÷ 3-2 = (32)4
⇒ 32m ÷ 3-2 = 38
⇒ 32m+2 = 38
Comparing, we get
2m + 2 = 8
⇒ 2m = 8 – 2 = 6
⇒ m = \(\frac { 6 }{ 2 }\) = 3

Question 12.
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q12.1
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q12.2

Question 13.
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q12.3
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q13.2
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q13.3

Question 14.
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q14.1
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q14.2
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 2 Exponents and Powers Ex 2.1 Q14.3

ML Aggarwal Class 8 Solutions for ICSE Maths

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