Elementary Basic Math Symbols: Addition, Subtraction, Multiplication, Division, Equal, Not Equal, Greater Than, Less Than, Percent, Parentheses, Dollar, Cents. 9 Mystery Pictures with 27 Color By Number Math Worksheets. Each worksheet includes 10 unique problems. All pictures have a colored answer key. Directions: Solve the math problem, look at the color next to it, and then color in ALL of the squares that have that answer.