subtract
B1Neutral, Technical (mathematics)
Definition
Meaning
To take away a number or amount from another; to perform the mathematical operation of finding the difference.
To reduce or diminish something by removing a part; to take something away in a general, often metaphorical, sense.
Linguistics
Semantic Notes
Most commonly a transitive verb with a direct object (the subtrahend). The number being subtracted from is the minuend. The core meaning is arithmetical, but it is also used in broader contexts to mean 'remove' or 'detract.'
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or core usage. Both use 'take away' as a more informal alternative in basic maths.
Connotations
Neutral in both varieties. In formal writing, 'subtract' is preferred over 'take away'.
Frequency
Equally common in both varieties, with high frequency in educational and technical contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
NP ___ NP (e.g., Subtract 5 from 10)NP ___ (e.g., Now you subtract.)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[No common idioms. The word is used literally.]”
Usage
Context Usage
Business
Used in financial contexts, e.g., 'Subtract the operating costs from the gross revenue.'
Academic
Central to mathematics and sciences; used in formulae and instructions.
Everyday
Common in shopping, cooking (adjusting quantities), and basic calculations.
Technical
The precise term for the arithmetic operation; used in programming (subtract operator).
Examples
By Part of Speech
verb
British English
- First, subtract the VAT from the total price.
- If you subtract his commute time, his actual working day is quite short.
American English
- Remember to subtract the discount before you calculate the tax.
- The injury will subtract a key player from the lineup for weeks.
adverb
British English
- [No standard adverb form.]
American English
- [No standard adverb form.]
adjective
British English
- [No standard adjective form. 'Subtractive' is highly technical.]
American English
- [No standard adjective form. 'Subtractive' is highly technical.]
Examples
By CEFR Level
- Subtract two from ten to get eight.
- In maths today, we learned to subtract.
- You need to subtract the delivery charge from your refund.
- The teacher asked us to subtract the smaller number from the larger one.
- After subtracting all her expenses, she realised her profit was minimal.
- The formula requires you to subtract the mean from each data point.
- One could argue that the new policy subtracts from the overall flexibility of the system.
- The analyst warned that supply chain issues would subtract significantly from the projected growth.
Learning
Memory Aids
Mnemonic
Think of a submarine taking away (TRACTing) cargo from a ship: SUB-TRACT. Or, remember the prefix 'sub-' meaning 'under' or 'away,' and 'tract' as in 'pull' – to pull away a number.
Conceptual Metaphor
ARITHMETIC IS PHYSICAL MANIPULATION (taking away objects). NEGATIVE CHANGE IS SUBTRACTION (e.g., 'The scandal subtracted from his credibility.').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'extract' (извлекать). 'Subtract' is specifically вычитать or отнимать in mathematics.
- Avoid using the preposition 'of' incorrectly; it's 'subtract FROM', not 'subtract of'.
Common Mistakes
- Incorrect preposition: 'Subtract of 10' instead of 'Subtract from 10'.
- Confusing the order: Saying 'Subtract 10 from 5' but meaning '5 from 10'.
- Spelling: 'substract' (missing the 't').
Practice
Quiz
In the calculation '12 - 5 = 7', which word describes the action performed?
FAQ
Frequently Asked Questions
'Subtract' is the general mathematical term. 'Deduct' is often used in financial/legal contexts (e.g., deduct expenses, deduct points). They are largely synonymous, but 'deduct' implies a formal removal based on rules.
As a preposition ('ten minus four'), 'minus' indicates subtraction. As a verb, it's informal ("Minus the shipping costs"). In formal instructions, 'subtract' is the standard verb.
The noun is 'subtraction'. The result of subtraction is the 'difference'.
The word comes from Latin 'subtractus', from 'sub-' (under) + 'trahere' (to draw). The 'b' before the 't' is part of the Latin root and must be retained.