Skip to main content
district home page calendar  lunch menus  myschoolbucks  schooltool  Tipline 
Module 5
Numbers 10-20; Count to 100 by Ones and Tens


Throughout this module students will:
  • Count to 100 by ones and by tens
  • Count forward beginning from a given number within the known sequence (instead of having to begin at 1)
  • Write numbers from 0 to 20.  Represent a number of objects with a written numeral 0-20 (with 0 representing a count of no objects)
  • Count to answer "how many?" questions
  • Compose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (e.g., 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones


Terminology Definition Illustration
Say Ten counting Students practice counting 10-19 objects by first making a group of 10; 11 is ten one, 12 is ten two, 13 is ten three, etc.  
Say Ten counting by tens to 100 i.e., 1 ten, 2 tens, 3 tens, 4 tens, 5 tens, 6 tens, 7 tens, 8 tens, 9 tens, 10 tens
Regular counting by ones from 11-20 i.e., eleven, twelve, thirteen,...etc.
Regular counting by tens to 100 i.e., ten, twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety, one hundred
Hide Zero cards Cards that foster a place-value understanding (i.e., 13 is 10 and 3) and encourage students to read numbers from left to right

Additional Resources

10 ones and some ones within a teen number from JD K-4 Math on Vimeo.

K.5%22SayTen%22wayofCounting from JD K-4 Math on Vimeo.

Hide Zero cards from JD K-4 Math on Vimeo.

New Project 2 from JD K-4 Math on Vimeo.



Dr. Peter Smith, Superintendent

P.O. Box 606
DeWitt, NY 13214

Phone: (315) 445-8300

Developed by CNYRIC