Addition Within 100 Worksheet
Practice addition facts within 100 with this first-grade math worksheet.
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Addition Within 100
Name:
Date:
Score:
Read each question carefully and solve the addition problems. Show your work.
Add the numbers. Write your answer in the blank.
1. 15 + 3 =
2. 20 + 7 =
3. 32 + 5 =
4. 41 + 8 =
5. 53 + 6 =
Use the number line to help you add. Then write your answer.
6. Start at 20. Add 5. Where do you land?
7. Start at 40. Add 10. Where do you land?
8. What is the sum of 62 + 8?
60
68
70
72
Solve the following addition problems.
9. 23 + 14 =
10. 35 + 21 =
11. 40 + 30 =
12. 56 + 13 =
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