Question

(ii) 3 x 10-5
10
= 0.00003
100000
Ex=2.2
1. Express the following numbers in standard form.
(i) 0.0000000000085
(ü) 0.00000000000942
(ii) 6020000000000000
(iv) 0.00000000837
(v) 31860000000
2. Express the following numbers in usual form.
(i) 3.02 x 10-6 (ii) 4.5 x 104
(iii) 3 x 10-8
(iv) 1.0001 x 109 (v) 5.8 x 1012 (vi) 3.61492 x 10
3. Express the number appearing in the following statements in standard form.
1
(i) 1 micron is equal to
1000000
(ii) Charge of an electron is 0.000,000,000,000,000,000,16 coulomb.
(i) 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
4. In a stack there are 5 books each of thickness 20mm and 5 paper sheets each of
thickness 0.016 mm. What is the total thickness of the stack.
m.​

Answer 1

Answer:

hmm

Step-by-step explanation:

(ii) 3 x 10-5

10

= 0.00003

100000

Ex=2.2

1. Express the following numbers in standard form.

(i) 0.0000000000085

(ü) 0.00000000000942

(ii) 6020000000000000

(iv) 0.00000000837

(v) 31860000000

2. Express the following numbers in usual form.

(i) 3.02 x 10-6 (ii) 4.5 x 104

(iii) 3 x 10-8

(iv) 1.0001 x 109 (v) 5.8 x 1012 (vi) 3.61492 x 10

3. Express the number appearing in the following statements in standard form.

1

(i) 1 micron is equal to

1000000

(ii) Charge of an electron is 0.000,000,000,000,000,000,16 coulomb.

(i) 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

4. In a stack there are 5 books each of thickness 20mm and 5 paper sheets each of

thickness 0.016 mm. What is the total thickness of the stack.

m.