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Free worksheets · Kindergarten

Teen Numbers as 10 and Some Ones Worksheet

Find how many ones to add to 10 to make each teen number, and write it in the box.

Free printable

Teen Numbers as 10 and Some Ones

6 questions, one page, US Letter. Print it and do it on paper.

On the sheet: Start at ten. Find how many more make the teen number. Write it in the box.

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About this worksheet

Every teen number is one ten and some ones: 14 is 10 and 4, 17 is 10 and 7. Each question on this page starts at 10 and asks how many more make the number, from 11 to 19.

Seeing 10 inside every teen number is a child's first look at place value. It also explains why 13 and 31 are different numbers, and it makes later facts like 10 + 6 feel obvious instead of counted.

A worked example

10 + ☐ = 16

  1. Start at 10 and hold it in your head.
  2. Count up to 16, raising one finger for each number: 11, 12, 13, 14, 15, 16.
  3. Six fingers are up, so 6 more make 16.
  4. Write 6 in the box.

Answer: 10 + 6 = 16

The common mistake

What it looks like: Writing the whole teen number in the box, like 16, or writing 1 because it is the first digit.

Why it happens: The child reads the number on the right and copies part of it instead of asking how many more are needed.

How to fix it: Cover the 1 in 16 with a finger and say "ten"; the digit left showing is the ones. Then check by reading the whole line aloud: "10 plus 6 is 16."

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.

No credit card. $19.99 a month after that, or don’t stay.
  • Mon Teen Numbers as 10 and Some Ones
  • Tue What they missed, back again
  • Wed The next step, when they’re ready

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