Free printable · Numbers & maths
Build Numbers 11–20
A whole ten and some more: make two-digit numbers visible before writing them.
Download free PDF 16 pagesA4 PDF · 0.3 MB · No sign-up needed
A good starting pointBegin when counting to ten and matching small quantities to numerals are secure. Age is a guide; choose tasks by readiness.
Teen numbers are easier to discuss when your child can see the complete ten and the extra ones. These worksheets use paired ten-frames and tens-and-ones representations to make that structure visible.
Each number from 11 to 20 has a focus page. Mixed model-counting and missing-number pages follow, along with a reusable building mat. Choose concrete building first when a written numeral alone is not yet meaningful.
Open the pack
What’s inside the PDF
- Ten focus pages, one each for 11–20, with six tasks per page.
- Two mixed reviews: count the models and complete missing-number rows.
- A reusable building mat plus ten-strips, single squares and number cards.
- A grown-up guide and answers: 16 A4 pages total.
Try it together
How to use this activity
Make one whole ten
Count and fill the first ten-frame. Name it as ten before adding anything to the next frame.
Add the extra ones
For 13, fill three spaces in the second frame. Say 'one ten and three ones make thirteen', pointing to each part of the model.
Connect the model and numeral
Try the tens-and-ones, tracing, matching and ordering tasks. Return to the frames when the written number needs checking.
Build and review
Use a whole ten-strip and loose single squares on the mat. Later try the mixed model page and missing-number rows without a focus title giving the number.
Make it fit your child
A gentler start
Work with 11 and 12 first. Let your child place the pieces while you say and write the number.
Ready for another step?
Show a mixed model and ask your child to identify the tens before counting extra ones. Cover the numeral, predict it and then write it.
Look before you print
Actual pages from the pack
A selection from the 16-page PDF.
Open a page to see it larger.
Paper, pencil, ready
Printing and using the pages
Download the PDF, open it in a PDF viewer and choose A4 paper at 100% or “actual size”. Print only the pages you want to use. Check the preview before printing; keep colour cues visible when a selected task depends on them.
Regular paper works for the worksheets. For reusable loose cards, light card can be easier to handle if your printer supports it. Keep any cutout pieces at the printed scale so they fit their mat. A grown-up should handle preparation and cutting.
These original BundleBrain pages are free for personal and classroom use. Share a link to this activity page so other families can find the instructions and download their own copy. Please do not resell or re-upload the PDF.
Good to know
A couple of questions
Is this a pack for learning to count from one?
It builds on secure counting within ten. Number Garden or the counting monsters are earlier starting points.
Are the reusable pieces required?
No. The worksheets can be completed directly. The mat offers a movable model when additional support is useful.
Your next little learning moment
Ready to try Build Numbers 11–20?
Print a page, sit together and start small.
Free PDF · 0.3 MB · No account needed
