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MathemaGrids Help

Rules / Objectives Summary

  • Complete the grid with all of the digits from 1 to 9.
  • All of the sums need to be correct.

See the Walkthrough for extra tips and tricks.

MathemaGrid


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

Each sum turns green when the digits entered make it correct.

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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