- математика
- Събиране и изваждане
- Age 6-8
-
level: 1
- Bulgarian
คำแนะนำของผู้เขียน
Събиране и изваждане с преминаване до 20
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คำแนะนำของผู้เขียน
Събиране и изваждане с преминаване до 20