NCERT Grade 8-Exponents and Powers-Questions – MySchoolPage

# NCERT Solutions for Class 8 Maths

Find 100% accurate solutions for NCERT Class VIII Math. All questions have been explained and solved step-by-step, to help you understand thoroughly. Free Download option available!

# Exponents and Powers

Exercise 1

1.     Evaluate:

(i) 3-2                     (ii) (4)2                     (iii)

2.    Simplify and express the result in power notation with positive exponent:

3.    Find the value of:

4.    Evaluate:

5.    Find the value of m for which 5m ÷ 5-3 = 55.

6.    Evaluate:

7.    Simplify:

Exercise 2

8.   Express the following numbers in standard form:

(i) 0.0000000000085                        (ii) 0.00000000000942

(iii) 6020000000000000                  (iv) 0.00000000837

(v) 31860000000

9.   Express the following numbers in usual form:

(i) 3.02 × 10-6          (ii) 4.5 × 104          (iii) 3 × 10-8

(iv) 1.0001 × 109     (v) 5.8 × 1012          (vi) 3.61492 × 106

10.  Express the number appearing in the following statements in standard form:

(i) 1 micros is equal to

(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 if a thick paper is 0.07 mm.

11.  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?

MySchoolPage connects you with exceptional, certified math tutors who help you stay focused, understand concepts better and score well in exams!