Which statement is true?

90 is 1/10 of 100

900 is 100 times as much as 9

9000 is 1000 times as much as 90

9 is 1/10 of 900

The correct statement or mathematical expression in the choices given is:

900 is 100 times as much as 9.

Because if you multiply 9 x 100 (100 times as much as 9) = 900.

Hence,

1. 1/10 of 100 = 10

2. 1000 times as much as 90 or 1000 x 90 = 90, 000

3. 9 is 1/10 of 900 or 900 is divided by 10: 900 / 10 = 90