In kindergarten, your child will learn to count all the way to 100, by ones and by tens! But wait—Can he count to 100… starting from 29? Twenty-eight… Twenty-nine… Umm… twenty-ten?
Counting forward beginning at a given number, like 29, is a different skill than beginning at 1.
Numbers that end in 9 need 1 more to make a new group of 10. So, nine plus one equals one ten or 10. Nineteen plus one equals two tens or 20. Twenty-nine plus one equals three tens or 30.
This is a skill that needs lots of practice. So next time you’re in line at the grocery store, pick a number and have your child count on!
Kindergarten Common Core Standards
Counting & Cardinality: Know number names and the count sequence.
(K.CC.1) Count to 100 by ones and by tens.
(K.CC.2) Count forward beginning from a given number within the known sequence (instead of having to begin at 1).