Fiona bought x boxes of oranges. There were 10 orans in each box. Write down an expression, in terms of x, for the number of oranges she bought.

The expression for the number of oranges Fiona bought, in terms of x, is x multiplied by 10.

To find the expression for the number of oranges Fiona bought, we need to multiply the number of boxes she bought (x) by the number of oranges in each box (10).

So the expression would be:

Number of Oranges = x * 10

To find the total number of oranges Fiona bought, we multiply the number of boxes (x) by the number of oranges per box (10).

Therefore, the expression, in terms of x, for the number of oranges she bought can be written as: x * 10.