Let us start with an example to show the logic behind the exercises.
Find the calculation that uses all cells of the honey comb field and has the final result of 5.
In the example honey comp field multiple mathematical expressions are possible that make use of all cells:
11 + 01 – 4 = 8, 4 – 111 + 0 = -107, 114 – 0 + 1 = 115
But only one has the result of 5. Start with the digit 4 at the bottom. When we subtract 10 and add 11 the result met: 4 – 10 + 11 = 5
The next picture shows the way in field. the cell borders in grey show the way to follow. Start with the digit 4.
Puzzle 1
Find the calculation that uses all cells and reaches the target result -5
Solution of Puzzle 1
5-5-9-6 = -15
Puzzle 2
Find a calculation and reach the target of 4
Solution of Puzzle 2
The solution is 6-3+3/3 = 4
Puzzle 3
Reach the target of -20
Solution of Puzzle 3
The solution is 10 – 1*5*6 = -20