6th graders shows she gets the concept 6th grader who basically understands the concept but needs a bit more practice with making small changes in color and using the paintbrush 7th grader who has been exposed to the concept twice now. Understands the color mixing. Decent but not great paintbrush control 7th grader: 2nd time exposed to concept. CL provides CBSE Math prep material for class 8 students. Get free Key Notes, MCQs, Tests, Sample Papers, NCERT Solutions, NCERT Solutions, Important Questions for 8. Math 8 Powered by Create your own unique website with customizable templates. Home Math 7 Adv.
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NCERT Solutions for Class 8 Maths Chapter 12 Exponents and Powers
NCERT Solutions for Class 8 Maths Chapter 12 Exponents and Powers Exercise 12.1
Ex 12.1 Class 8 Maths Question 1.
Evaluate:
(i) 3-2
(ii) (-4)-2
(iii) ((frac { 1 }{ 2 }))-5
Solution:
8th Concept Listmrs. Colville's Math Class 1
Ex 12.1 Class 8 Maths Question 2.
Simplify and express the result in power notation with a positive exponent.
Solution:
8th Concept Listmrs. Colville's Math Classroom
Ex 12.1 Class 8 Maths Question 3.
Find the value of
Solution:
Ex 12.1 Class 8 Maths Question 4.
Solution:
Ex 12.1 Class 8 Maths Question 5.
Find the value of m for which 5m ÷ 5-3 = 55.
Solution:
5m ÷ 5-3 = 55
⇒ 5m-(-3) = 55 [∵ am ÷ an = am-n]
⇒ 5m+3 = 55
Comparing the powers of equal bases, we have
m + 3 = 5
m = 5 – 3 = 2, i.e., m = 2
Ex 12.1 Class 8 Maths Question 6.
Evaluate:
Solution:
Ex 12.1 Class 8 Maths Question 7.
Simplify:
Solution: