Printable Addition Facts to 20 Worksheets
Printable addition facts to 20 worksheets for 1st and 2nd grade, with an answer key on every sheet. The sets below cover 4 different skills, so you can start where your child actually is. Available as visual guides, speed drills, and word problems.
Targeted Practice by Skill
Make ten to add
Two Arm Make Ten Split
Make ten to add
Dual Ten Frames
Facts with sums 11 to 20
Vertical Facts To 20
Facts with sums 11 to 20
Add Facts To 20
Facts with sums 11 to 20
Dual Frames 20
Mixed facts to 20
Add Facts To 20
Mixed facts to 20
Addition Addition Facts To 20 03
Fact fluency drills
Add Facts To 20
Fact fluency drills
Addition Addition Facts To 20 04
About Addition Facts to 20
What this skill is
Addition facts to 20 covers mental math addition for sums up to 20, developing quick recall through strategies like make-a-ten and doubles-plus-one.
When children learn it
Addition facts to 20 are mastered in 1st and 2nd grade, aligned to Common Core standard 2.OA.B.2.
Teaching Tips
- Use the make-a-ten strategy: decompose 8 + 5 into 8 + 2 + 3 = 10 + 3 = 13.
- Conduct timed speed drills for 2 minutes daily.
Common Mistakes
- Relying slowly on finger counting for single-digit facts.
- Making one-off counting errors on facts crossing 10 (like 8 + 5 = 13).
More Addition Concepts
Addition SentencesAddition Within 10Addition with Number LinesNumber BondsDoubles and Near DoublesAdding Whole Tens and HundredsFact FamiliesMaking the Next TenTwo-Digit AdditionAddition Word ProblemsAdding Three or More NumbersMissing AddendMental AdditionThree-Digit Addition4-Digit AdditionAdding Large Numbers