Free worksheets · Kindergarten
Count On to 20 Worksheet
Start at a number between 8 and 17 and write the next three numbers, counting up to 20.
Free printable
Count On to 20
9 questions, one page, US Letter. Print it and do it on paper.
On the sheet: Say the first number out loud. Count on from it, one number at a time. Write the next three numbers in the blanks.
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About this worksheet
Each question gives one starting number between 8 and 17. The child says it out loud, then counts on and writes the next three numbers in the blanks, crossing 10 on some.
The teen numbers are where counting gets tricky: their names don't sound like the numbers they are written as. Counting on through them, and writing each one, makes the order of 11 to 20 feel familiar.
A worked example
12, ____, ____, ____
- Say the first number out loud: 12.
- Count on one number at a time: 13, 14, 15.
- Write 13, 14 and 15 in the blanks.
Answer: 12, 13, 14, 15
The common mistake
What it looks like: Writing teen numbers backward, like 31 for 13 or 61 for 16.
Why it happens: We say "thir-teen" with the 3 first, so a child writes the 3 first.
How to fix it: Point out that every teen number starts with a 1, for the ten. Write the 1 first, then the number you hear.
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 Count On to 20
- Tue What they missed, back again
- Wed The next step, when they’re ready
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