Counting in Year 1 New this week are sets of beautifully illustrated worksheets on counting on in tens, completing number lines and finding missing numbers in number sentences, all for Year 1 children. With over 60 sets of worksheets, most containing 4 pages each, this must surely be one of the best, if not the very best, resource to be found anywhere, giving you choice and plenty of back up material. Go to Year 1: Counting