Soroban worksheet: 20th Kyu (with answer key)
A printable sample soroban (abacus) worksheet for 20th Kyu (Addition, Mental math). Format: 1-digit, 2 terms. Print the sheet below as it is — the answer key is included.
20th Kyu format
| Type | Format |
|---|---|
| 🧮 Addition | 1-digit, 2 terms answers up to 5 |
| 💭 Mental math | 1-digit, 2 terms answers up to 5 |
A4 / Letter. Only the sheets are printed.
| 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|
2 3 | 2 1 | 2 3 | 1 2 | 2 2 |
| 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|
4 1 | 1 2 | 3 2 | 2 2 | 1 4 |
| 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|
2 2 | 2 1 | 1 1 | 1 2 | 1 1 |
| 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|
1 2 | 1 1 | 1 2 | 1 2 | 1 2 |
What 20th Kyu builds
20th Kyu is one of this app's beginner levels (answers up to 5). Single-digit addition only, so children learn the friends of 5 and 10 one at a time.
* The format (digits, terms, total digits) is this app's own guide, based on publicly available abacus exam examples. Every number was generated by this app; nothing is copied from any exam. This app is not affiliated with any abacus exam organisation. “Kyu” and “Dan” are the Japanese level names (20th Kyu is the first step; Dan is above 1st Kyu).
Other levels
FAQ
Can anyone print this worksheet?
Yes. The sample sheet and answer key print as they are, with no sign-up. Press “Print” and only the sheets come out (A4 / Letter).
How do I get new problems?
The app's “🖨 Make a worksheet” builds 20th Kyu sheets in the same format with new numbers every time. Levels 20–16 need no sign-up and stay free.
What do Kyu and Dan mean?
They are the Japanese soroban levels. Children start at 20th Kyu and move up to 1st Kyu, then 1st Dan to 10th Dan. 20th–16th Kyu are this app's own beginner levels. See what each level means.
Where is the answer key?
Below the worksheet. When printed, it comes out as the last page.
The app's “🖨 Make a worksheet” builds sheets in the same format with new numbers every time (answer key included). Solve on screen and it is marked automatically; when an answer is wrong, it shows the bead move that most likely caused it, worked out from the answer.
Levels 20–16 need no sign-up and stay free. Want to play first? Try the Flash Anzan Adventure (no sign-up).
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