There are several theories regarding the origin of this sign.
One of the most popular is that it probably originates from a custom in ancient Rome: In the arena, after a battle between gladiators, the crowd decided if the winner would either kill or spare his defeated opponent, by holding their thumbs up (that meant mercy) or down (death).
The greatest thing about decimal numbers is that since most people have 10 fingers/thumbs, they have handy way of using their body to help them when counting. Sorry for the pun, there.
Written Spoken Body language Mime
It is body language for "yes".
Just do it the Grandma Fa way!
you read it like this 3x1=3 genius
No, slugs do not have thumbs or any appendages resembling thumbs. Slugs have a soft, slimy body without any distinct fingers or thumbs.
I would probably make the sign for planting or sowing which is rubbing the fingers against the thumbs in front of the body as if dropping seeds on the ground.
saddle joint
for signs signifying time, most signs signifying the past will move backwards over your shoulder or backwards in comparison with the present time. In the futue, is the opposite, the sign usually moves forward
A good example of body language is maintaining eye contact during a conversation, as it shows attentiveness and engagement. Additionally, leaning in towards the person you are speaking to can convey interest and openness in the interaction. Crossing your arms can signal defensiveness or discomfort.
To sign "dog" in American Sign Language, you would use both hands in a fist with your thumbs sticking out. Move your hands towards your body and back out in a bouncing motion. This represents the ears of a dog flopping back and forth.
To sign "groom" as in husband in American Sign Language (ASL), use the same sign as "BRIDE" but signed on the opposite side of the body to differentiate between the two signers. This sign is made by bringing both fists up in front of your shoulders with your thumbs touching your shoulders, then bringing your dominant hand down in a swooping motion in front of your body.
In American Sign Language (ASL), you can sign "huge" by moving both open hands outwards from your body, starting with your hands close to your body and slowly extending your arms as you sign. This sign emphasizes something being very large or gigantic.
To sign "great" in American Sign Language (ASL), use both hands with thumbs up and fingers spread out. Bring the hands up in front of your body with palms facing in towards each other. Move the hands up and down slightly to emphasize the concept of greatness.
Opposable thumbs Body hair 2 arms and 2 legs
With difficulty, depending upon the state of decomposition and decay of the fingers and thumbs.
To sign "together" in American Sign Language, bring both hands together, with palms facing inward, then interlock your fingers. Next, move your hands in a circular motion as if blending two things together.