The number 1. 6, 7, 8 and 9 are represented by special gestures. For example, 6 is indicated by thumbs-up and thumbs-up, and other fingers make fists.

The number ten means that one finger on the left hand is ten.

3. Fingers are erected in order to add, and fingers are clenched in order to subtract. When the number exceeds ten and involves 6, 7, 8 and 9, the gestures change in sequence instead of standing up or clenching fingers.