mental calculation
Figuring without paper
Mental calculation is arithmetic performed in the head without writing, calculators, or other aids.
The phrase emphasizes the contrast with written computation: She did the mental calculation quickly and announced the total.
Someone skilled at mental calculation can multiply large numbers, extract roots, or perform other operations entirely in their mind.
Joining quantities mathematically
- subtractionRemoving quantities mathematically
- multiplicationProduct-finding operation
- divisionSplitting into parts
- fractionsParts expressed numerically
percentages · decimals · estimation · rounding · carrying · borrowing · place value · times tables
Ability with figures
- proficiencySkilled performance level
- masteryComplete skill or control
- fluencySmooth linguistic command
- competenceAdequate ability to function
aptitude · practice · drilling · expertise · accuracy · precision · talent · prodigy
Finite problem-solving procedure
- heuristicsPractical problem-solving shortcuts
- chunkingDividing into manageable parts
- visualizationForming mental or graphical images
- shortcutsQuicker methods or paths
approximation · decomposition · compensation · bridging · regrouping · number sense · pattern recognition · breaking down
Temporary cognitive holding space
- concentrationSustained single-minded attention
- focusConcentrated attention point
- attentionFocused mental awareness
- cognitive loadDemands on working memory
visualization · spatial reasoning · executive function · processing · brain training
Acquiring goods at retailers
- tippingPaying beyond the bill
- budgetingAllocating funds systematically
- currency conversionChanging money between nations
- cookingPreparing food with heat
measurements · time zones · discounts · tax · scorekeeping · betting odds · carpentry · dosage
Moving with haste
- quickMoving with speed
- instantaneousHappening without any delay
- lightningAtmospheric electrical discharge
- split-secondFraction of a moment
on-the-spot · real-time · reflexive · automatic · fluent · effortless · timed · competitive
addition
Joining quantities mathematically
- subtractionRemoving quantities mathematically
- multiplicationProduct-finding operation
- divisionSplitting into parts
fractions · percentages · decimals · estimation · rounding · carrying · borrowing · place value · times tables · square roots
numeracy
Ability with figures
- proficiencySkilled performance level
- masteryComplete skill or control
- fluencySmooth linguistic command
competence · aptitude · practice · drilling · expertise · accuracy · precision · talent · prodigy · savant
algorithm
Finite problem-solving procedure
- heuristicsPractical problem-solving shortcuts
- chunkingDividing into manageable parts
- visualizationForming mental or graphical images
shortcuts · approximation · decomposition · compensation · bridging · regrouping · number sense · pattern recognition · breaking down · simplification
working memory
Temporary cognitive holding space
- concentrationSustained single-minded attention
- focusConcentrated attention point
- attentionFocused mental awareness
cognitive load · visualization · spatial reasoning · executive function · processing · brain training
shopping
Acquiring goods at retailers
- tippingPaying beyond the bill
- budgetingAllocating funds systematically
- currency conversionChanging money between nations
cooking · measurements · time zones · discounts · tax · scorekeeping · betting odds · carpentry · dosage · fuel economy
rapid
Moving with haste
- quickMoving with speed
- instantaneousHappening without any delay
- lightningAtmospheric electrical discharge
split-second · on-the-spot · real-time · reflexive · automatic · fluent · effortless · timed · competitive · flash
- math skillsarithmetic, addition, subtraction, multiplication, division
- savant skillseidetic memory, hyperlexia
- mind gamesmind game, head game, head games, mind games, intimidation
mental calculationgut feeling
Instinctive sense about something
intuition · guesswork · wild guess · estimation · emotional reasoning
mental, mentality, mentally, mentalist, calculate, calculation, calculations, calculator, calculable