Digital deck · 1st Grade · 19 questions
Number Bonds to 20 Digital Activity | 1st Grade
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Number Bonds to 20 for 1st grade: 19 question slides with a type-in answer box, plus an answer key slide.
What’s inside this download
- 19 question slides, one question per slide
- A type-in answer box on every question
- A title slide and an answer key slide at the end
- One .pptx file — opens in Google Slides and PowerPoint
Why choose this over a free activity
- Parts of 20, with tens thinking
- Cards, flash cards and a deck for parts of 20
- Keys give each missing part, so you can check it adds to 20
- No printing — works on a laptop, tablet or classroom screen
License and file format
- One .pptx file; upload it to Google Drive to open it in Google Slides
- One teacher or one household. Use it with 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
The problem
20 = 3 + ?, and the answer is 17
Bonds to 20 are big. Children who know the pairs to 10 can use them, but they do not always see how.
Counting up from the part
3 + ? = 20 means counting 17 on fingers. A child needs a quicker way.
Not using bonds to 10
7 + 13 = 20 uses 7 + 3 = 10. Children do not notice the link.
A gap that is too large
A missing 17 is hard to guess. Thinking in tens makes the gap manageable.
Each item gives a part and asks for the other part of 20. Children use bonds to 10 and tens thinking to find the answer.
What’s inside
19 questions, one per slide.
Students type straight into the box — no printing, no cutting.
Number Bonds to 20
Written for 1st grade.
Title to answer key
A title slide first, the answer key last.
Google Slides & PowerPoint
One .pptx file that opens in both.
Look inside
One question per slide, with a box to type the answer.
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 PowerPoint file you can open in Google Slides.
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2
Open
Upload it to Google Drive and open it with Google Slides, or open it in PowerPoint.
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3
Assign
Share it with your class. Students type an answer on each slide, and you check against the key.
Outcomes
Find the missing part of 20
Use a bond to 10, then add a ten.
- 20 = 3 + ?
- 20 = 7 + ?
- 20 = 2 + ?
- 20 = 19 + ?
- 20 = 14 + ?
- 20 = 16 + ?
- 20 = 6 + ?
Who it’s for
Built for the kitchen table and the classroom.
Parents & homeschool
Use two ten frames. Fill one with 7 counters, then ask how many more to make 20.
Teachers
Fits first grade after bonds to 10. The slides serve as a class warm-up.
Tens and ones
Prepares for two-digit work.
Questions
Before you buy.
Is there a digital deck?
Yes. A Google Slides deck puts bonds to 20 on screen for a class warm-up.
Should my child know bonds to 10 first?
Yes. They are the base for bonds to 20.
How do I get the file?
The download link appears right after checkout and lands in your inbox at the same time. One PowerPoint file you can open in Google Slides.
Can I share it with my class?
Yes — one teacher can use it with their own students, this year and next. Sharing the file with other teachers needs a separate license.
Do I need Google Slides?
No. The file is a PowerPoint (.pptx). It opens in PowerPoint, and in Google Slides once you upload it to Google Drive.
What if it isn’t right for us?
Email support@pencillane.com within 30 days and we refund the full $4.50. No form, no questions.
Parts of twenty
Number Bonds to 20 for 1st grade, ready to assign.
Get it — $4.50