Grade 1
Number Bonds to 20 (Set 2)
A free printable number bonds to 20 (set 2) worksheet with an answer key. Find the missing part or the missing whole. Perfect for 1st grade practice at home or in class.
- Size
- US Letter (8.5 × 11 in), fits A4
- 2 pages: the worksheet and its answer key
- Level
- Grade 1
- License
- Free for personal & classroom use
About this worksheet
A free printable number bonds to 20 (set 2) worksheet with an answer key. Find the missing part or the missing whole. First graders can do it on their own once they know the strategy at the top of the page. Say each bond out loud: 6 and 4 make 10.
Tips for using it
- Use counters split into two piles to check a tricky bond.
- If a part is missing, start from the whole and count back.
- Practice bonds to 10 until they are automatic; they power the make-10 strategy later.
Printing tips
Download the PDF and print at 100% (or “fit to page” on A4). Page 1 is the worksheet and page 2 is the answer key with the answers in red; print just page 1 if you want to keep the answers for checking. The PNG shows page 1 only. Free for personal, family and classroom use.
