Adding whole tens
Browse 0 free printable Adding whole tens worksheets for First Math. These Addition worksheets are designed to give students targeted practice and build confidence in math.
Worksheets are available at multiple difficulty levels — Easy, Medium, and Hard — so you can meet every student where they are. Each worksheet is an instant PDF download: print as many copies as you need for your classroom, tutoring sessions, or home practice at no cost.
Whether you're a teacher looking for addition practice problems, a homeschool parent building a First curriculum, or a tutor helping a student catch up, these free printable worksheets are ready to use today.
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Practice Questions
- 30 + 80 = ?
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110
- 40 + 50 = ?
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90
- 70 + 20 = ?
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90
- 60 + 30 = ?
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90
- 20 + 90 = ?
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110
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Teacher Resources
Teaching Notes
This activity builds fluency in adding multiples of 10, a foundational mental math skill for second graders. Emphasize the connection between basic addition facts (e.g., 3+4=7) and adding tens (30+40=70) through place value understanding.
Vocabulary
Common Mistakes
- Forgetting the zero when adding tens (e.g., 30+40=7).
- Treating tens as ones (e.g., confusing 3 tens + 4 tens with 3 ones + 4 ones).
- Difficulty transferring single-digit addition knowledge to tens.
Differentiation
Discussion Questions
- How is adding 20 + 60 similar to adding 2 + 6?
- Why is understanding place value important when adding tens?
- When might you use mental math to add tens in real life?
Extension Activities
- Use a number line to skip count by tens.
- Create addition stories with tens.
- Play with base-ten blocks.
Parent Tip
Use coins like dimes to represent tens and practice adding them.
Learning Path
Skill Cluster
Number Sense & Operations
Estimated Time
15 minutes