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Click here to win prizes by solving the mscroggs.co.uk puzzle Advent calendar.
Click here to win prizes by solving the mscroggs.co.uk puzzle Advent calendar.

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Puzzles

3 December

Put the digits 1 to 9 (using each digit exactly once) in the boxes so that the sums are correct. The sums should be read left to right and top to bottom ignoring the usual order of operations. For example, 4+3×2 is 14, not 10. Today's number is the product of the numbers in the red boxes.
++= 17
+ ÷ ×
÷-= 1
- × ÷
÷-= 0
=
4
=
12
=
27
Tags: numbers, grids

16 December

Put the digits 1 to 9 (using each digit exactly once) in the boxes so that the sums are correct. The sums should be read left to right and top to bottom ignoring the usual order of operations. For example, 4+3×2 is 14, not 10. Today's number is the largest number than can be made from the digits in red boxes.
××= 6
× × ×
××= 180
× × ×
××= 336
=
32
=
70
=
162

13 December

Put the digits 1 to 9 (using each digit exactly once) in the boxes so that the sums are correct. The sums should be read left to right and top to bottom ignoring the usual order of operations. For example, 4+3×2 is 14, not 10. Today's number is the smaller number in a red box to the power of the larger number in a red box.
+-= 8
- - -
+÷= 3
+ ÷ ×
+×= 120
=
8
=
1
=
8
Tags: numbers, grids

7 December

Put the digits 1 to 9 (using each digit once) in the boxes so that the three digit numbers formed (reading left to right and top to bottom) have the desired properties written by their rows and columns.
multiple of 25
today's number
all digits even
multiple of 91multiple of 7cube number
Tags: grids, numbers

4 December

Put the digits 1 to 9 (using each digit exactly once) in the boxes so that the sums are correct. The sums should be read left to right and top to bottom ignoring the usual order of operations. For example, 4+3×2 is 14, not 10. Today's number is the product of the digits in the red boxes.
+÷= 2
+ ÷ -
÷-= 5
÷ - ×
-×= 4
=
3
=
5
=
6
Tags: grids, numbers

20 December

Put the digits 1 to 9 (using each digit exactly once) in the boxes so that the sums reading across and down are correct. The sums should be read left to right and top to bottom ignoring the usual order of operations. For example, 4+3×2 is 14, not 10.
+-= 8
- - -
+÷= 9
+ ÷ ×
+×= 108
=
6
=
1
=
18
The answer is the product of the digits in the red boxes.

Show answer

Tags: numbers, grids

18 December

Put the digits 1 to 9 (using each digit once) in the boxes so that the three digit numbers formed (reading left to right and top to bottom) have the desired properties written by their rows and columns.
multiple of 9
multiple of 3
multiple of 5
multiple of 6multiple of 4cube number
Today's number is the multiple of 6 formed in the left hand column.

Show answer

Tags: numbers, grids

13 December

Put the digits 1 to 9 (using each digit once) in the boxes so that the three digit numbers formed (reading left to right and top to bottom) have the desired properties written by their rows and columns.
The row marked sum is equal to the sum of the other two rows. The column marked sum is equal to the sum of the other two columns.
odd
all digits even
sum
evenoddsum
Today's number is the largest three digit number in this grid.

Show answer

Tags: numbers, grids

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