This is my interpretation of the questions answer. If you are thinking of a design ten just make a snake one. Its simple but not hard.
+ is positive, or plus
- is negative, or minus
the third one is multiply, can look like * and "x"
the fourth one is divide, can look like "/"
hope this helps
542 --> 500
328 --> 300
Estimate: 800
I really don’t understand this question. can you explain this in the comment so i can answer your
