mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2015

4 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.
-+= -4
+ + +
-÷= -1
- ÷ ×
-×= -30
=
0
=
2
=
54
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

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

Archive

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