EARLY MATH · 11 WORKSHEETS
Addition and Subtraction Within 20 Worksheets
Free printable worksheets for step-by-step addition and subtraction practice within 20.
Why these worksheets are together
After calculations within 10 feel comfortable, use 10 as an anchor. A number line or groups of ten make the strategy easier to see.
READY TO PRINT
Worksheets in this collection
ACTIVITY TIPS
Try this at home or in class.
- Find the part that makes 10 before adding what remains.
- Pause to check the plus or minus sign on every problem.
COMMON QUESTIONS
Before you choose a page
When should a child move to calculations within 20?
Try these after the child can solve within 10 with objects and can count in order to 20.
Should regrouping terminology be taught first?
No. Begin with hands-on groups of ten, then add formal terms later.