mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2015

12 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.
+-= -2
- - -
+÷= 4
+ ÷ ×
+×= 50
=
4
=
-4
=
10
The answer is the product of the digits in the red boxes.

Show answer

Tags: numbers, grids

Archive

Show me a random puzzle
 Most recent collections 

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2019