Math symbols!!

HIIIEYEYEYY,euhm so this is a universe where you saw a math symbols...LIFE??? AND HUMAN/LIFE SIZED??!? Anyway they also had different height- euhm Anyway there's •Basic Arithmetic + : Plus − : Minus × : Times / Multiplication ÷ : Divided by / Division = : Equals ≠ : Not equal to Comparison & Logic < : Less than > : Greater than ≤ : Less than or equal to ≥ : Greater than or equal to ≈ : Approximately equal to ∴ : Therefore ∵ : Because Algebra & Geometry √ : Square root π : Pi ∞ : Infinity % : Percent ^ : Caret / Power of |x| : Absolute value of x ∠ : Angle Δ : Delta (Change) Sets & Calculus ∈ : Is an element of ⊂ : Subset of ∅ : Empty set / Null set ∑ : Summation ∫ : Integral ! : Factorial