en.wikipedia.org/wiki/Mathematical_puzzle

Mathematical puzzles make up an integral part of recreational mathematics. They
have specific rules as do multiplayer video games, but they do not usually ...

www.mathsisfun.com/puzzles/

Math and Logic Puzzles. If you REALLY like exercising your brain, figuring things
'round and 'round till you explode, then this is the page for you ! Whosoever ...

www.math.utah.edu/~cherk/puzzles.html

These puzzles do not require any mathematical knowledge, just logical
reasoning. Check, how smart you are. If you cannot solve them, take it easy.
Almost all ...

www.mathsphere.co.uk/resources/MathSphereMathsPuzzles.htm

A great set of maths puzzles for upper primary children. All answers are given.
Many teachers use these as a weekly challenge. They are ideal for printing out in
...

www.theguardian.com/science/alexs-adventures-in-numberland/2014/oct/21/martin-gardner-mathematical-puzzles-birthday

Oct 21, 2014 ... The maestro of recreational maths was born 100 years ago today. Here we
celebrate his birthday with eight of his most celebrated puzzles.

www.mathwarehouse.com/riddles/math-riddles.php

Riddles, brainteaser and logic puzzles with answers.

www.transum.org/Software/Puzzles/

Transum Maths Puzzles is an ever-growing collection of interactive mathematical
and logic puzzles designed for anyone interested in school-level Maths.

www.mathgoodies.com/puzzles/

Math Puzzles that hone students vocabulary skills the fun way. We offer
interactive and printable crosswords and word searches.

goodriddlesnow.com/math-riddles

These are the best and most fun math riddles we can find. All of these tricky
riddles are based on real math concepts and can be solved with purely math and
...