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

Solution:

Standard form of numbers is used to express very large  and small numbers.

Large numbers can be expressed using exponents of 10.

(i) 5,00,00,000

= 5 × 10⁷

(ii) 70,00,000

= 7 × 10⁶

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

= 3.1865 × 10⁹

(iv) 3,90,878

= 3.90878 × 10⁵

(v) 39087.8

= 3.90878 × 10⁴

(vi) 3908.78

= 3.90878 × 10³

☛ Check: NCERT Solutions for Class 7 Maths Chapter 13

Video Solution:

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

Maths NCERT Solutions Class 7 Chapter 13 Exercise 13.3 Question 3

Summary:

The following numbers are expressed in the standard form: (i) 5,00,00,000 = 5 × 10⁷ (ii) 70,00,000 = = 7 × 10⁶ (iii) 3,18,65,00,000 = 3.1865 × 10⁹ (iv) 3,90,878 = 3.90878 × 10⁵ (v) 39087.8 = 3.90878 × 10⁴ (vi) 3908.78 = 3.90878 × 10³

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