Respuesta :

Answer:

2.1 x 10^5  = 210,000.

Step-by-step explanation:

Convert 2.1 x 10^5 to ordinary form

10^5 = 100000

2.1 = 21/10

Thus.

2.1 x 10^5 = 21/10 * 100000 = 210,000

Ordinary form of 2.1 x 10^5  is 210,000.