Lemma

Puzzles · Chapter 4 of 14

Arithmetical puzzles

3 curated · 43 from open sources

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Curated

3
#TitleDifficultyTags
18The lily padDoublingEasyExponential growthWorking backwards
19Five machinesRatesEasyRatesProportional reasoning
21There and backA sneaky averageMediumAverage speedTotal distance over total time

From open sources

43

Showing everything, including problems with no answer to check, a missing figure, or a near-copy elsewhere. Show only complete problems

#TitleDifficulty
132098Average SpeedMedium
132100The Three VillagesMedium
132101The Hydroplane QuestionMedium
132102Donkey RidingMedium
132103The Basket of PotatoesMedium
132104The Passenger's FareMedium
132105The Three GroupsMedium
132106Queer MultiplicationMedium
132107Digital DivisionMedium
132108Adding the DigitsMedium
132109More Mixed FractionsMedium
132110Digital Square NumbersMedium
132111The Mystic ElevenMedium
132112Academic CourtesiesMedium
132113The Labourer's PuzzleMedium
132114Mr. Gubbins in a FogMedium
132115Painting the Lamp-PostsMedium
132116The Parish Council ElectionMedium
132117The Muddletown ElectionMedium
132118The Suffragists' MeetingMedium
132119The Abbot's PuzzleMedium
132120Reaping the CornMedium
132121A Puzzling LegacyMedium
132122Curious NumbersMedium
132123The Converted MiserMedium
132124Rackbrane's Little LossMedium
132125Heads Or TailsMedium
132126The See-Saw PuzzleMedium
132127A Legal DifficultyMedium
132128A Question of DefinitionMedium
132129The Miners' HolidayMedium
132130Simple MultiplicationMedium
132131Simple DivisionMedium
132132A Problem in SquaresMedium
132133The Nine Treasure BoxesMedium
132134The Five BrigandsMedium
132135The Banker's PuzzleMedium
132136The Stonemason's ProblemMedium
132137The Sultan's ArmyMedium
132139Find Ada's SurnameMedium
132140Saturday MarketingMedium
132099The Two TrainsMedium
132138A Study in ThriftMedium