Rules of play:
The puzzle is made up of 4 boards (A through D), each board is split into four groups of four numbers. Each groups of numbers within a board have one solution - so each group of numbers have the same solution per board. Each board has only one solution. To find the solution, use the operators given under each group. These operators are both used, one is used once, the other is used twice. To give an example: 10, 20, 15 and 5. Operators + (plus) and - (minus) then a possible solution could be (((10+5)+15)-20)=10. The order of the numbers and operators are random, the puzzle is for you to work out possible solutions per group and look for a common answer in the board. Do this for all boards to solve the puzzle.
Each time the page is loaded a new puzzle is generated. This is the first version of this puzzle, so please give your feedback. Let us know if it is easy or hard, or if you know ways to improve it. Have Fun!!