Printable Addition Facts to 20 Worksheets
Addition facts to 20 worksheets guide 1st and 2nd graders to master basic math facts using mental strategies. These printable speed drills and strategy sheets include full answer keys for home review.
Addition Facts to 20 Practice Pack. Ready to Print.
Structured, printable skill sheets with step-by-step guidance for Addition Facts to 20.
Build My PacketIncluded with Practice Buds MembershipTargeted Practice by Skill
Make ten to add
Split the second number to make 10
Make ten to add
Make 10 to add
Make ten to add
Make ten first, then add
Facts with sums 11 to 20
Addition facts: sums 11 to 20
Facts with sums 11 to 20
Solve each problem
Facts with sums 11 to 20
Addition facts to 20
Mixed facts to 20
Solve each problem
Mixed facts to 20
Mixed addition facts to 20
Fact fluency drills
Solve each problem
About Addition Facts to 20
What this skill is
Addition facts to 20 encompass all single-digit addition pairs with sums up to 20. Developing automatic recall frees cognitive working memory for multi-digit calculations.
When children learn it
Adding within 20 using mental strategies is taught in 1st grade (CCSS 1.OA.C.6), with fluent fact recall from memory expected by the end of 2nd grade (CCSS 2.OA.B.2).
Teaching Tips
- Practice targeted strategy clusters rather than random flashcards: dedicate one day to "Make Ten" facts (8 + 5 = 8 + 2 + 3) and another to "Doubles Plus One" (6 + 7 = 6 + 6 + 1). Grouping facts by strategy builds lasting retention.
Common Mistakes
- Counting on fingers slowly for every problem rather than utilizing mental strategies like making ten or doubles.
- Hesitating on facts with larger addends like 8 + 7 or 9 + 6.
- Reverting to counting all when cognitive fatigue sets in.