# EX.13.3 Q3 Exponents-and-Powers Solutions- NCERT Maths class 7

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## Question

Express the following numbers in standard form:

(i) \(5,00,00,000\)

(ii) \(70,00,000 \)

(iii) \(3,18,65,00,000\)

(iv) \(3,90,878\)

(v) \(39087.8\)

(vi) \(3908.78\)

## Text Solution

**Reasoning:**

Standard form of numbers is used in case of large numbers. Large numbers can be expressed using exponents of \(10\).

(i)

\(5,00,00,000= 5\times{{10}^7}\)

(ii)

\(70,00,000 = 7 \times {{10}^6}\)

(iii)

\(3,18,65,00,000= 3.1865 \times {{10}^9}\)

(iv)

\(3,90,878= 3.90878 \times {{10}^5}\)

(v)

\(39087.8= 3.90878 \times {{10}^4}\)

(vi)

\(3908.78= 3.90878 \times {{10}^3}\)