Rachel had to complete 5 pages of math homework and 2 pages of reading homework. How many more pages of math homework than reading homework did she have?
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First, we need to find out how many pages of homework Rachel had in total. We can do this by adding 5 pages of math homework to 2 pages of reading homework. This gives us a total of 7 pages of homework. 

Next, we need to find out how many more pages of math homework than reading homework Rachel had. We can do this by subtracting 2 pages of reading homework from 5 pages of math homework. This gives us a difference of 3 pages. 

Therefore, Rachel had 3 more pages of math homework than reading homework.