Back in my school days, I remember using Window Cards as practice for my arithmetic skills.
I am grateful for those days that my mom tortured me to work on the paper window cards. Instinctively I used the same for my kids. I found out soon enough that it must have been a torture for my mom, too, to check my over 100+ answers (because each window card has 100 entries, and I had to do four).
So, I designed an excel file to help me out on this. Download by clicking on the link below.
Addition Worksheet for Excel 2010
Subtraction Worksheet for Excel 2010
Multiplication Worksheet for Excel 2010
How does it work?
The workbook have different levels of difficulty, adding numbers from 0-5 upto adding numbers from 200 - 900.
The child will get different sets of numbers to answer each time they click on start.
When they finish the worksheet, the system will ask for their name and it will be recorded in the sheet so that the child can monitor his/her progress.
Hope these help!