Addition worksheets: Adding 1-digit numbers, sums < 20
Addition worksheets with single-digit addition; all sums are less than 20. Horizontal addition format is used. Students can use various strategies for solving the problems (counting fingers, counting up, etc).
![](/themes/custom/k5_b/images/k5-member-logo-100px.png)
These worksheets are available to members only.
Join K5 to save time, skip ads and access more content. Learn More