Mixed Word Problems: Addition and Subtraction to 20
Browse 6 free printable Mixed Word Problems: Addition and Subtraction to 20 worksheets for Grade 1 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 Grade 1 curriculum, or a tutor helping a student catch up, these free printable worksheets are ready to use today.
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Practice Questions
- Ben had 12 marbles and lost 5. How many marbles does he have now?
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7
- Maya picked 8 apples and then picked 6 more. How many apples did she pick?
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14
- There were 15 birds on a fence. 7 flew away. How many are left?
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8
- Sam had 9 stickers and got 5 more for his birthday. How many stickers does he have in total?
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14
- A box contains 18 pencils. 4 were used. How many pencils remain?
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14
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Quick Tip
Teacher Resources
Teaching Notes
Emphasize identifying keywords (e.g., 'altogether', 'left') to determine the correct operation. Encourage visual aids like drawings or number lines for problem-solving.
Vocabulary
Common Mistakes
- Misinterpreting the operation (addition vs. subtraction)
- Not fully reading or understanding the word problem
- Minor calculation errors within 20
Differentiation
Discussion Questions
- How did you decide whether to add or subtract?
- What clues in the story helped you?
- Can you draw a picture to show how you solved it?
Extension Activities
- Draw pictures for problems.
- Use a number line.
- Create your own mixed problems.
Parent Tip
Ask your child to sort word problems by operation.
Learning Path
Skill Cluster
Operations & Algebraic Thinking
Estimated Time
15 minutes