5 Math Puzzles hacking all brains

1. Equation Puzzle

There's a board with equations - but the numbers, and signs (+, -, x, :) are in pieces and not in order. Touch and drag pieces on board to make correct equations.
320 levels to hack your brain.

2. On/Off Puzzle

There's a board with full of numbers. Tap the numbers to make sums in rows and columns to predefined numbers. The board is in different size, which reflects difficulty levels:
4 x 4
5 x 5
6 x 6
7 x 7

Enjoy the puzzle with 80 levels.

3. Equation Builder
Find the hidden equations and swipe the numbers to clear the board. 3 different sizes, which reflects difficulty levels
3 x 3
3 x 4
4 x 4

90 levels hacking your brain.

4. Block Puzzle
There's a board with grey blocks and 1 green block. Each block has a number. The rule is to merge grey blocks so as its number is the same as number in green blocks - then merge the grey and green blocks to complete a level.

There are 80 levels, with board in different size:
4 x 4
5 x 5
6 x 6
7 x 7

5. Jigsaw Puzzle
You need to move pieces on board to make numbers in order... This is the well known Fifteen Puzzle Game. The max level of this game is with the board 7x7.

(*) HINT - hints are important to help you to resolve hard puzzles. Each time breaking a new level, you will be rewarded by a hint. Use hints wisely.

(*) RESTART - tap level number to restart a game

Enjoy.