Another way...

put 300 in any blank cell
Copy that cell, then select your range, right click Paste Special, select
Add, OK


"Steved" wrote:

Hello from Steved

1010 to 1310 every second digit will change from 0 to 3

1030 to 1330

I would like a formula please to replace the 2 digit only as show'n above

ie 1010 to 1310 not 1010 to 1313
Thankyou.