It’s interesting to me that we place so much importance on children reciting the alphabet, when knowing the order of letters doesn’t really help a child read. It’s much more important for children to know the forward and backward sequences of numerals. These sequences actually help children do addition and subtraction. Learning the sequences for composite groups, such as counting by 2’s, 3’s, 4’s, etc. will help children solve multiplication and division problems.
Children need experiences saying the number word sequences verbally and ordering numerals. K-5 Math Teaching Resources http://www.k-5mathteachingresources.com/numeration-activities.html has some great activities for children to learn number sequences. One of my favorites on this page is “Build a Number Line” in Stage C. The game can be adapted for any series of 10 numerals including counting by 2’s, 3’s, 4’s, etc.