Answer :

Sure! To write the expression [tex]\(9 \times 10^4\)[/tex] as an ordinary number, follow these steps:

1. First, understand that [tex]\(10^4\)[/tex] means multiplying 1 by 10 four times, which is equivalent to 10,000.

2. Next, multiply 9 by 10,000:

[tex]\[ 9 \times 10,000 = 90,000 \][/tex]

Therefore, the expression [tex]\(9 \times 10^4\)[/tex] written as an ordinary number is [tex]\(90,000\)[/tex].