Gstr3b and gstr1 tax value mismatch.- help me friends

Hello friends,

While filing gstr 1 for the months of april, may and june 2018- I have entered the taxable value correctly, but for the month of april, i have paid the cgst and sgst value by short of Rs.100 each by mistake and filed the return.. Now i have to file gstr1, in my case the taxable value is right, but only the sgst and cgst amount is short by Rs.100 each. How to rectify this mistake?

In GSTR 1, i shall enter the correct actual figures of taxable value and cgst,sgst.  Can i rectify the the short payment of Rs. 100 each in cgst and sgst in next months gstr 3b return?

Let us say for exampe , for july 2018 gstr 3b, the sales is 200000 and cgst - 5000; sgst - 5000.

But to rectify the past rs.100 difference, i shall enter the data in july 2018 gstr 3b return as sales - 200000; sgst - 5100 and cgst 100. right ?

Please guide me.

thanks in advance