Puzzles · Chapter 4 of 14

Arithmetical puzzles

3 curated · 42 from open sources

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Curated

3

#	Title	Difficulty	Tags
18	The lily padDoubling	Easy	Exponential growthWorking backwards
19	Five machinesRates	Easy	RatesProportional reasoning
21	There and backA sneaky average	Medium	Average speedTotal distance over total time

From open sources

42

Complete problems only, with worked solutions first. Show everything

#	Title	Difficulty
132098	Average Speed	Medium
132100	The Three Villages	Medium
132101	The Hydroplane Question	Medium
132102	Donkey Riding	Medium
132103	The Basket of Potatoes	Medium
132104	The Passenger's Fare	Medium
132105	The Three Groups	Medium
132106	Queer Multiplication	Medium
132107	Digital Division	Medium
132108	Adding the Digits	Medium
132109	More Mixed Fractions	Medium
132110	Digital Square Numbers	Medium
132111	The Mystic Eleven	Medium
132112	Academic Courtesies	Medium
132113	The Labourer's Puzzle	Medium
132114	Mr. Gubbins in a Fog	Medium
132115	Painting the Lamp-Posts	Medium
132116	The Parish Council Election	Medium
132117	The Muddletown Election	Medium
132118	The Suffragists' Meeting	Medium
132119	The Abbot's Puzzle	Medium
132120	Reaping the Corn	Medium
132121	A Puzzling Legacy	Medium
132122	Curious Numbers	Medium
132123	The Converted Miser	Medium
132124	Rackbrane's Little Loss	Medium
132125	Heads Or Tails	Medium
132126	The See-Saw Puzzle	Medium
132127	A Legal Difficulty	Medium
132128	A Question of Definition	Medium
132129	The Miners' Holiday	Medium
132130	Simple Multiplication	Medium
132131	Simple Division	Medium
132132	A Problem in Squares	Medium
132133	The Nine Treasure Boxes	Medium
132134	The Five Brigands	Medium
132135	The Banker's Puzzle	Medium
132136	The Stonemason's Problem	Medium
132137	The Sultan's Army	Medium
132139	Find Ada's Surname	Medium
132140	Saturday Marketing	Medium
132099	The Two Trains	Medium