The standard form of the number 12345 is
a. 1234.5 × 10¹
b. 123.45 × 10²
c. 12.345 × 10³
d. 1.2345 × 10⁴

Solution:

The number given is

12345

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

12345 = 1.2345 × 10⁴

Therefore, the standard form is 1.2345 x 10⁴.

✦ Try This: The standard form of the number 67891 is

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

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NCERT Exemplar Class 7 Maths Chapter 11 Problem 8

The standard form of the number 12345 is: a. 1234.5 × 10¹, b. 123.45 × 10², c. 12.345 × 10³, d. 1.2345 × 10⁴

Summary:

The standard form of the number 12345 is 1.2345 × 10⁴

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