The page number of the math workbook uses the number 177. How many pages are there in this workbook? How to do this problem?
First of all, you should know that the number of 10 is only 0 to 9. For example, 12 should be counted as two numbers, and the number of 1 2 instead of 1, 177 should be subtracted from 1 by 9 pages, with 168.