HOW TO POST PETTY CASH ENTRIES

HOW TO POST PETTY CASH ENTRIES

Question 1-I don't understand what's in my cash flow chart. I have entered an amount of 200,000 naira into the opening balance of my petty cash, but it's showing 245,550. I don't know where I have made mistake.

Question 2- The amount I have in the outgoing and incoming sections are not correct, I don't know why it's that way. 

Question 3- All my entries are for the month of September, but the income and expenses chart shows it's for August

Please I need all the help I can get. 

thanks