Puzzles
19 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.
+ | – | = 7 | |||
× | × | × | |||
+ | – | = 0 | |||
÷ | ÷ | ÷ | |||
+ | – | = 2 | |||
= 4 | = 35 | = 18 |
11 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.
+ | + | = 15 | |||
+ | + | ÷ | |||
+ | – | = 10 | |||
+ | – | × | |||
÷ | × | = 3 | |||
= 16 | = 1 | = 30 |
5 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.
+ | + | = 15 | |||
+ | – | + | |||
+ | + | = 15 | |||
+ | × | ÷ | |||
+ | + | = 15 | |||
= 15 | = 15 | = 15 |
17 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.
+ | + | = 10 | |||
+ | × | × | |||
+ | + | = 12 | |||
+ | – | + | |||
+ | + | = 23 | |||
= 10 | = 12 | = 23 |
9 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 you can make with the digits in the red boxes.
+ | + | = 20 | |||
+ | + | ÷ | |||
+ | – | = 0 | |||
+ | – | × | |||
÷ | × | = 12 | |||
= 22 | = 6 | = 2 |
5 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.
× | ÷ | = 15 | |||
+ | + | + | |||
× | ÷ | = 14 | |||
– | – | – | |||
× | ÷ | = 27 | |||
= 9 | = 5 | = 5 |
21 December
Arrange the digits 1–9 (using each digit exactly once) so that the three digit number in:
the middle row is a prime number;
the bottom row is a square number;
the left column is a cube number;
the middle column is an odd number;
the right column is a multiple of 11.
The 3-digit number in the first row is today's number.
today's number | |||
prime | |||
square | |||
cube | odd | multiple of 11 |
18 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 | |||
+ | × | × | |||
+ | + | = 17 | |||
× | - | + | |||
+ | + | = 17 | |||
= 11 | = 17 | = 17 |