Addition By 12 Sharing is Caring This iWorksheet contains 12 randomized items of addition by 12 for you to practice with. In the last item, click or touch anywhere to activate the FINISH button. Sharing is Caring Related iWorksheets: Addition By 1 Addition By 4 Addition By 5 Addition By 7 Post navigation Previous PostPrevious Addition By 11Next PostNext Multiplication By 7