New Learning Composite Mathematics Class 8 SK Gupta Anubhuti Gangal Powers (Exponents) Chapter 2b Solution

New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Powers (Exponents) Self Practice 2b Solution

(1) Find each value

(a) 10-4

(b) 10-7

(c) 10-8

(d) 10-10

(2) Write each number in scientific notation.

(a) 5,700,000

(b) 8,19,000

(c) 4,000,000,000

(d) 56,000

(3) (a) 0.000053

(b) 0.000000084

(c) 0.0009

(d) 0.0603

SOLUTION Number 1,2 & 3:

Write each number in standard form.

(4) (a) 5.7 x 103

(b) 6.39 x 105

(c) 1.71 x 106

(d) 4.0 x 109

(e) 7.02 x 104

(5) (a) 9.4 x 10-4

(b) 2 x 10-3

(c) 5.01 x 10-2

(d) 3.88 x 10-1

(e) 3.7 x 10-9

(6) Write the following facts in scientific notation.

(a) The distance from the earth to the sun is 149600000000 m.

(b) the average diameter of a red blood cell is 0.000007 mm.

(c) Diameter of a wire in a computer chip is 0.000003 m.

(d) Size of a plant cell is 0.00001275 m.

SOLUTION Number 4,5 & 6:


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