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Exponents & Powers

Exponents & Powers
science Square
Science Square

  • Exponent is a quantity which represents the power to which a given number or expression is to be raised.

Maths class 8 Exponents and powers

Powers with negative exponents

Maths class 8 Exponents and powers

Maths class 8 Exponents and powers

Laws of Exponents

Maths class 8 Exponents and powers

Maths class 8 Exponents and powers

Maths class 8 Exponents and powers

Practice these questions

Maths class 8 Exponents and powers

Maths class 8 Exponents and powers

Quiz for Exponents & Powers

Q.1

(√4+ √5)2 − (√4− √5)2 = ?

a)

8√5

b)

41- 8√5

c)

41 + 8√5

d)

41

Q.2

If the mean of 3 numbers a, b, c is 6, the find the value of? ∛((5(a+b−c))(5(b+c−a))(5(c+a−b)))

a) 5
b) 6
c) 8
d) 56'

Q.3

Simplify (√2−1)/(√2+1)

a) 3/√2
b) 3+2√2
c) √2/3
d) 3-2√2

Q.4

Simplify (√3+√2)/(√3−√2)

a) 5+2√6
b) 5-2√6
c) 1/5 +2√6
d) 5+√6

Q.5

8.9 × 1024 - 1.9 × 1025 = ?

a) 7 x 1025
b) 1.01 x 1025
c) −1.01 x 1024
d) −1.01 x 1025

Q.6

How many prime factors exists for the following expression 1511 x 77 x 23

a) 30
b) 28
c) 32
d) 34

Q.7

Simplify (√5+2)/(√5−2)

a) 9+4√5
b) 1 / (9 −4√5 )
c) 1 / (9 −4√5 )
d) 9 −4√5

Q.8

Given the following equations, what is the value of b? 5(a+b)= 3125 and 3125(a+b)=5 ,

a) ( 15 / 5)
b) (10 / 5)
c) ( 11 / 5 )
d) (12 / 5)

Q.9

What is the value of (52006 x 32010 ) / 152008

a) (45 / 258)
b) ( 81 / 625)
c) ( 8 / 65)
d) ( 9 / 25)

Q.10

1/2(−2) x 2/3(−3)=?

a)

(16 / 9)

b)

( 4 / 81)

c)

(27 / 2)

d)

( 4 / 27)

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