NCERT Solutions For Class 8 Maths Chapter 12 Exponents and Powers Ex 12.2
Here, Below you all know about NCERT Solutions for Class 8 Maths Chapter 12 Exponents and Powers Ex 12.2 Question Answer. I know many of you confuse about finding this Chapter 12 Exponents and Powers Ex 12.2 Of Class 8 NCERT Solutions. So, Read the full post below and get your solutions.
| Textbook | NCERT |
| Board | CBSE |
| Category | NCERT Solutions |
| Class | Class 8 |
| Subject | Maths |
| Chapter | Chapter 12 |
| Exercise | Class 8 Chapter 12 Exponents and Powers 12.2 |
| Number of Questions Solved | 4 |
NCERT Solutions for Class 8 Maths Chapter 12 Exponents and Powers Ex 12.2
NCERT TEXTBOOK EXERCISES
Question 1. Express the following numbers in standard form:
(i) 0.0000000000085
(ii) 0.00000000000942
(iii) 6020 000 000 000 000
(iv) 0.00000000837
(v) 31860000000
Solution.
Question 2. Express the following numbers in usual form:
Solution.
Question 3. Express the number appearing in the following statements in standard form:
(i) 1 micron is equal to 1/1000000m.
(ii) Charge of an electron is 0.000,000,000,000,000,000,16 coulomb.
(iii) Size of a bacteria is 0.0000005 m
(iv) Size of a plant cell is 0.00001275 m
(v) Thickness of a thick paper is 0.07 mm.
Solution.
Question 4. In a stack there are 5 books each of thickness 20 mm and 5 paper sheets each of thickness 0.016 mm. What is the total thickness of the stack ?
Solution.
Total thickness of books
= 5 x 20 mm = 100 mm
Total thickness of paper sheets
= 5 x 0.016 mm = 0.080 mm
∴ Total thickness of the stack
= Total thickness of books + Total thickness of paper sheets
= 100 mm + 0.080 mm
= (100 + 0.080) mm
= 100.080 mm
= 1.0008 x 102 mm.
NCERT Solutions for Class 8 Maths Chapter 12 Exponents and Powers Exercise 12.2 PDF
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