Question

Write the following numbers in the usual form:
(i) 4.83 × 10⁷
(ii) 3.21 × 10⁵
(iii) 3.5 × 10³

Answer 1

We have
(i) 4.83 × 10⁷ = 483 × 10^7-2 [since the decimal point is moved two places to the right]
= 483 × 10⁵ = 4,83,00,000

(ii) 3.21 × 10⁵ = 321 x 10^5-2 [since the decimal point is moved two places to the right]
= 321 x 10³ = 3,21,000

(iii) 3.5 × 10³ = 35 x 10^3-1 [since the decimal point is moved one place to the right]
= 35 x 10² = 3,500