Class 8 Maths Exponenets 2018

INDIAN SCHOOL MUSCAT – MIDDLE SECTION – DEPARTMENT OF MATHEMATICS – TERM :02 ( 2018 – 19 ) NAME OF THE STUDENT : CLASS ...

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INDIAN SCHOOL MUSCAT – MIDDLE SECTION – DEPARTMENT OF MATHEMATICS – TERM :02 ( 2018 – 19 ) NAME OF THE STUDENT :

CLASS : 8 SEC :

TOPIC: EXPONENETS AND POWERS

WORKSHEET NO: 02

S.NO 1

SUB: MATHEMATICS DATE : 27. 11. 2018

ANSWER THE FOLLOWING 2 3

2

Simplify: ( 4- 1 ̶ 8- 1) ÷  

  2 2 1     b)      3     

  8  1  16  1   4  1        13   5    5 

2

Find the value of

a)

3

Multiplicative inverse of 15- 4 is ______________

4

The value of 50 × 3- 1 is ___________________

3

Simplify and write the answer in exponential form with positive exponent. 5

a) (- 4 )3 × (- 4 ) – 8 4

9

2 2 2 c)         3 3 3

6

Simplify:

7

Find ‘x’ if

12

d)

Find ‘m’ if

 2 

2 3

4 3  a 5  b 4 4 5  a 8  b 3

a)

b)

a) 4 5x – 3 = 16 3x – 5 5

8

26 ÷ 2 9

b)

a)

10 5  9 4 2 4  15 3

b) 2 2x + 3 = 1

4 2 2      25  5   5  m

b) (25)- 4 = 5 m

Write in standard form: 9 a) 836 000 000 10

b) 0.000 000 045

Write in usual form a) 6.34 × 10- 5

c) 0. 00 000 306 b) 8.9 × 104

d)

6102 10000

c) 6 × 10- 8 d) 2.3456 × 103