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Help - MathemaGrids 



Objectives / Rules

See the Walkthrough below for extra tips and tricks.



MathemaGrids

What are the numbers for?
These are the sums that have to be satisfied once all of the digits 1 to 9 are entered.

Each sum turns green when the three entered digits satisfy that sum - however, that doesn't necessarily mean that the digits match the answer.

Click or move your mouse over the puzzle to see the answer.



Walkthrough 



Help 1
Step 1
This is the start of the puzzle.

Solve this puzzle for yourself at the same time.


Help 2
Step 2
There is only one way to make 28 = 4 x 7 (or 7 x 4).

As there is no ÷ 1 in any puzzle, there is no way of making 7 with the first two digits. Therefore the last digit must be the 7.


Help 3
Step 3
There is only one way to make 22 = 5 + 8 + 9 (as the 7 has already been used).


Help 4
Step 4
We are still after the 4 (Step 2: 4 x 7 = 28) in Column 1, and 8 ÷ 2 is now the only way of doing this.


Help 5
Step 5
The only remaining way to make 24 is 2 x 3 x 4. So the missing digits in Row 2 are 3 and 4.

Which means the remaining digits (1 and 6) must be in Row 3.


Help 6
Step 6
As there are no ÷ 1 in any puzzle, Row 3 must be 7 - 1 ÷ 6 = 1.


Help 7
Step 7
There is no way of reaching 42 in Column 3 if we use the 5, therefore Column 3 must be 9 x 4 + 6 = 42.


Help 8
Step 8
This cannot be 9, as we've already used it. Similarly the centre square cannot be 4. The puzzle now completes.


Help 9
Step 9
The completed puzzle.

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