Grade 1 addition up to 20
Generate a mental-math worksheet from the parameters below; or type one expression per line on the left (e.g. 45 + 27) for a custom list. A fixed seed reproduces the same set.
Operation:
Negative results:
Remainders:
Answers:
Separator:
Calculation Result
Download CSV
| No. | Problem | Type | Answer | Note |
|---|
Introduction to the tool and how to use it
Online elementary math worksheet generator: pick the operation mode (add / subtract / multiply / divide / mixed), the number of problems, and the value cap, then generate mental-math drills in one click. A result table and a printable list are output together, and answers can be shown or hidden.
A fixed random seed reproduces the same set; problem cap is 200 and value cap is 10000.
A fixed random seed reproduces the same set; problem cap is 200 and value cap is 10000.
How to use
- Choose the operation mode, and enter the problem count and value cap.
- Set negative numbers, remainders, answer visibility, and problems per line as needed.
- Click Run.
- Copy or export the worksheet.
Arithmetic drills
Grade 1 addition up to 20
20 problems, seed 20261001 - the same address always returns the same set.
- OperationAddition
- Max value20
- Problems20
- Seed20261001
Problems and answers
| # | Problem | Answer |
|---|---|---|
| 1 | 7 + 1 = | 8 |
| 2 | 8 + 5 = | 13 |
| 3 | 4 + 1 = | 5 |
| 4 | 13 + 3 = | 16 |
| 5 | 8 + 1 = | 9 |
| 6 | 2 + 12 = | 14 |
| 7 | 3 + 8 = | 11 |
| 8 | 13 + 1 = | 14 |
| 9 | 2 + 2 = | 4 |
| 10 | 6 + 9 = | 15 |
| 11 | 6 + 10 = | 16 |
| 12 | 1 + 1 = | 2 |
| 13 | 12 + 8 = | 20 |
| 14 | 8 + 1 = | 9 |
| 15 | 2 + 18 = | 20 |
| 16 | 1 + 2 = | 3 |
| 17 | 4 + 3 = | 7 |
| 18 | 3 + 2 = | 5 |
| 19 | 5 + 9 = | 14 |
| 20 | 2 + 12 = | 14 |
- The seed is fixed, so this page always shows the same problems. Open the tool to change the seed and generate another set.
- Copy or print the table directly; the answer column is already filled in.
Common inputs
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