Sydney has piles of 10 sticker sheets. She has 100 sheets in all.how many piles dose she have ?

You have two numbers. Do you think you should

add?
subtract?
multiply?
divide?

Does your answer make sense?

To determine how many piles Sydney has, given that she has 100 sticker sheets in total and each pile consists of 10 sticker sheets, you can divide the total number of sheets by the number of sheets in each pile.

So, to find the number of piles, divide 100 by 10:

100 รท 10 = 10

Sydney has 10 piles of 10 sticker sheets each.