In standard form 72 crore is written as
a. 72 × 10⁷
b. 72 × 10⁸
c. 7.2 × 10⁸
d. 7.2 × 10⁷

Solution:

The number given is

72 crore = 720000000

We know that

In standard form, a number is written as a × 10^k

a is the terminating decimal such that 1 ≤ a ≤ 10

k is any integer

So we get

720000000 = 7.2 × 10⁸

Therefore, the standard form is 7.2 × 10⁸

✦ Try This: In standard form 42 crore is written as

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 13

NCERT Exemplar Class 7 Maths Chapter 11 Problem 19

In standard form 72 crore is written as: a. 72 × 10⁷, b. 72 × 10⁸, c. 7.2 × 10⁸, d. 7.2 × 10⁷

Summary:

In standard form 72 crore is written as 7.2 × 10⁸

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