Advent calendar 2017

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
Tags: numbers, grids


Show me a random puzzle
 Most recent collections 

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

List of all puzzles


multiplication bases rectangles people maths advent squares rugby doubling square numbers dice mean partitions square roots indices division the only crossnumber digital clocks triangles lines trigonometry products cryptic clues arrows multiples addition regular shapes unit fractions digits money perimeter dates shapes sequences averages gerrymandering fractions sum to infinity menace probabilty calculus probability folding tube maps coordinates odd numbers cryptic crossnumbers functions area ellipses numbers symmetry factors complex numbers cube numbers factorials triangle numbers sport time hexagons angles median proportion geometry remainders speed routes pascal's triangle 3d shapes dodecagons elections perfect numbers algebra palindromes parabolas tiling floors crossnumber taxicab geometry chocolate polygons star numbers coins colouring ave chess wordplay shape quadratics dominos number sums books means circles irreducible numbers games planes christmas graphs crosswords surds integration percentages integers volume clocks scales chalkdust crossnumber crossnumbers logic 2d shapes differentiation range balancing cards grids spheres prime numbers


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020