mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2015

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

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

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

Archive

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