Add Three Numbers
Practice adding three numbers within 20 with 10 problems, an answer key, and a printable PDF for Grade 1.
10 problems · Standards: 1.OA.A.2 · Difficulty: easy
✅ Answer key included · ✅ Free for home & classroom use
Highlights
- Grade
- Grade 1
- Subject
- Math
- Pages
- 2 · worksheet + answer key
- Answer key
- ✅ Included
- Class time
- about 15 min
What's inside
- 1. 1 + 1 + 1 = ___
- 2. 2 + 1 + 2 = ___
- 3. 3 + 2 + 1 = ___
- 4. Maya has 4 red apples, 3 green apples, and 2 yellow apples. How many apples does she have in all?
- 5. 5 + 5 + 3 = ___
- 6. Jake saw 6 birds, then 4 more birds, then 3 more birds. How many birds did he see altogether?
Showing 6 of 10 problems. The free PDF includes every problem plus the full answer key.
Preview
The free PDF includes all 2 pages — every problem plus the full answer key.
What’s included
- 10 problems across 2 pages (worksheet + answer key)
- Answer key included — every answer, ready to check
- Standards: 1.OA.A.2
- Skill: Students add three whole numbers with sums within 20.
- Suggested use: morning work, classwork, homework, math centers, or sub plans
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