Flash Cards · Preschool · 5 pages
Missing Number to 20 Flash Cards | Preschool Math (19 Cards)
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Missing Number to 20: cut-apart cards for drill, games and home practice. Answer key included.
What’s inside this download
- 5 printable pages of Missing Number to 20 flash cards
- 19 problems for PreK
- Cut-apart cards for drill, games and home practice
- Answer key included
- One print-ready PDF, US Letter
Why choose this over a free worksheet
- Gaps in different positions
- Gaps fall in the teens as well as below ten
- Cards, flash cards and a deck for number-run gaps
Printing, license and file formats
- One PDF, US Letter 8.5 × 11 in. On A4 choose “fit to page”
- One teacher or one household. Print unlimited copies for your own students, this year and next
- Sharing the file itself needs a separate license
- Digital download — nothing ships
How do I get the files?
- The download link is on the order page the moment you pay, and in your inbox at the same time
- Re-download from that link any time — no account needed
- Wrong or broken file? Email support@pencillane.com and we fix it or refund you
Why get the bundle
- Paper cards, flash cards and slides give children the same counting task on different surfaces, which keeps it fresh.
The problem
Eleven, twelve, __, fourteen
Teen numbers stop following the pattern children learned up to ten. A gap in the teens asks for real knowledge of order.
Teens do not sound regular
Thirteen and fifteen break the 'ten and' pattern of the number words, so children cannot guess.
Counting from one
To find a missing teen, many children count from 1 each time instead of starting nearby.
Gaps in different spots
When the gap moves from the end to the middle, children need to think both ways, not only count on.
Runs up to 20 show one missing number. Children say the numbers on either side before choosing the one that fits.
What’s inside
5 pages of Missing Number to 20, ready to print.
Cut-apart cards for drill, games and home practice. One instruction line and a name line on every page.
Flash Cards
Cut-apart cards for drill, games and home practice.
Missing Number to 20
Written for PreK.
Print and go
US Letter, black and white, answer key included.
Look inside
Same layout on every page, so kids stop re-learning the instructions.



How it works
Ready before the printer warms up.
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1
Download
Check out, and your download link is in your inbox and on screen in seconds. One PDF, 5 pages.
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2
Print
Any printer, plain paper, black and white. Print one page or the whole stack.
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3
Hand out
Morning work, centers, small groups, the kitchen table. Same format every day, so the routine sticks.
US Letter 8.5 × 11 · PDFOutcomes
Fill the gap in a number run to 20
Say the neighbors, then name the gap.
- 0 1 2
- 1 2 3
- 2 3 4
- 3 4 5
- 4 5 6
- 5 6 7
- 6 7 8

Who it’s for
Built for the kitchen table and the classroom.
Parents & homeschool
Use a number line on the wall. Cover one number with a sticky note and ask what is hiding.
Teachers
Fits a K counting center. The slides work for a whole-class warm-up.
Counting routines
A quick daily slide builds comfort with the teens.

Questions
Before you buy.
Is there a digital version?
Yes. A Google Slides deck is included for screen practice.
What numbers appear?
Runs within 20, so children meet the teens as well as the smaller numbers.
How do I get the file?
The download link appears right after checkout and lands in your inbox at the same time. One PDF with 5 pages. No account needed.
Can I print it more than once?
Yes. One teacher or one household can print unlimited copies for their own students, this year and next.
Will it print in color?
The pages are designed to print in black and white, so they print clean on any home or school printer and do not eat a cartridge.
What if it isn’t right for us?
Email support@pencillane.com within 30 days and we refund the full $1. No form, no questions.
Name the missing teen
Missing Number to 20: cut-apart cards for drill, games and home practice. Answer key included.
Get it — $1