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.
+ | + | = 11 | |||
- | + | × | |||
+ | - | = 11 | |||
- | - | - | |||
+ | + | = 11 | |||
= -11 | = 11 | = 11 |
19 December
Put the digits 1 to 9 (using each digit exactly once) in the boxes so that the products are correct. Today's number is the smallest number that can be made using the digits in the red boxes.
× | × | = 90 | |||
× | × | × | |||
× | × | = 84 | |||
× | × | × | |||
× | × | = 48 | |||
= 64 | = 90 | = 63 |
17 December
Arrange the digits 1-9 in a 3×3 square so that every row makes a three-digit square number, the first column makes a multiple of 7 and the second column makes a multiple of 4.
The number in the third column is today's number.
square | |||
square | |||
square | |||
multiple of 7 | multiple of 4 | today's number |
12 December
Put the digits 1 to 9 (using each digit exactly once) in the boxes so that the sums are correct. Today's number is the product of the numbers in the red boxes.
+ | + | = 17 | |||
+ | + | + | |||
+ | + | = 7 | |||
+ | + | + | |||
+ | + | = 21 | |||
= 11 | = 20 | = 14 |
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 |
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 |
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 91 | multiple of 7 | cube number |