Q2 of 11 Page 200

Express the following numbers in usual form.

(i)


(ii)


(iii)


(iv)


(v)


(vi)

(i) =3.02/1000000 = 302/100000000 = .00000302



(ii) = 4.5 ×10000 = 45000



(iii) = 3/100000000 = .00000003



(iv) = 1.0001 × 1000000000 = 1000100000



(v) = 5.8 × 1000000000000 = 5800000000000



(vi) = 3.61492 × 1000000 = 3614920


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7

Simplify

(i)

(ii)

1

Express the following numbers in standard form.

(i) 0.0000000000085

(ii) 0.00000000000942

(iii) 6020000000000000

(iv) 0.00000000837

(v) 31860000000

 3

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

(i) 1 micron 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 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.