Free worksheets · Kindergarten
Teen Numbers: Find the Extra Ones Worksheet
See a bar of ten and some extra ones, count on from 10, and write how many ones are in each teen number.
Free printable
Teen Numbers: Find the Extra Ones
6 questions, one page, US Letter. Print it and do it on paper.
On the sheet: The long bar is ten. Keep counting the extra ones. Write how many extra ones in the box.
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About this worksheet
Each problem shows a long bar of 10 and some extra squares, numbered 11, 12, 13 and on. The sentence reads "14 is 1 ten and ? ones", and the child writes the number of extra squares.
This is the other direction of building a teen number: start with the number and pull it apart. A child who can say "17 is 10 and 7" is ready to add and subtract with teens.
A worked example
14 is 1 ten and ? ones.
- The long bar is 10.
- Keep counting the extra squares: 11, 12, 13, 14.
- That is 4 extra squares.
- Write 4 in the box.
Answer: 14 is 1 ten and 4 ones.
The common mistake
What it looks like: Writing the whole number, like 14, in the box.
Why it happens: The last number counted is 14, and the child writes it without stopping to count the squares.
How to fix it: Count the extra squares from 1, ignoring the small numbers under them. That count is the ones.
Ten minutes a day, on paper. We plan what comes next.
A printed page and a pencil. No screen, no login for your child. Snap a photo when they’re done: AI scores it, and what they missed comes back on the sheets that follow.
- Mon Teen Numbers: Find the Extra Ones
- Tue What they missed, back again
- Wed The next step, when they’re ready
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