The expanded form of the number 285 can be expressed by breaking it down into hundreds, tens, and units.
So, 285 can be expanded as:
\[ (2 \times 100) + (8 \times 10) + (5 \times 1) \]
This is equivalent to:
\[ (2 \times 100) + (8 \times 10) + (5 \times 1) \]
Out of the options given:
- (5 x 100) + (8 x 10) + (2 x 1) - incorrect order.
- (2 x 100) + (8 x 10) - missing units.
- (2 x 100) + (8 x 10) + (5 x 1) - correct.
- (810)(21) - not applicable.
Therefore, the correct expanded form of 285 is:
\[ (2 \times 100) + (8 \times 10) + (5 \times 1) \]