The "less than" reversal

SAT Glossary

The translation error responsible for more wrong answers than any other line in the dictionary: '5 less than x' is x-5, not 5-x. English states the subtracted amount first; algebra requires the reverse. The asymmetry works as a trap because 'more than' commutes harmlessly, so students carry the habit of ignoring order into subtraction, where it is fatal.

Sign up free — get all 191 SAT terms, flashcards & rank tracking →

More SAT terms

is $x-5$, not $5-x$. English states the subtracted amount first; algebra requires the reverse. The asymmetry works as a trap because 'more than' commutes harmlessly, so students carry the habit of ignoring order into subtraction, where it is fatal.","section":"Mathematics","source":"KomFi SAT vF - Chapter 29: Translating Words into Equations","necessity":4,"learnMore":"This is one of the most common English-to-algebra translation traps on the whole test: the phrase '5 less than $x

KomFi Academy — Stop doomscrolling. Get KomFi.

Turn wasted screen time into verifiable competence.

KomFi Academy is a curated training platform with 66,000+ practice questions, 25,000+ flashcards, on-demand video lectures, podcasts, and 4K slide decks across the topics serious professionals study: GMAT, LSAT, MCAT, SAT, Investment Banking, Private Equity (LBOs & PE math), Private Credit, Quantitative Finance, Financial Accounting, Asset- Backed Securities, Volume Profile Analysis, Order Flow Trading, Market Microstructure, Volume Spread Analysis, Elliott Wave Theory, Volume-Price Analysis, and Public Offering Frameworks.

What's inside

Topics

View pricing · Read testimonials

means $x-5$, NOT $5-x$ — even though it might feel backwards at first. In plain English, we state the amount being subtracted FIRST ('5 less than...'), but in algebra, the order has to flip, with $x$ coming first and 5 being subtracted from it second. This trips people up because a similar phrase, 'more than,' actually works fine either way you read it ('5 more than $x

KomFi Academy — Stop doomscrolling. Get KomFi.

Turn wasted screen time into verifiable competence.

KomFi Academy is a curated training platform with 66,000+ practice questions, 25,000+ flashcards, on-demand video lectures, podcasts, and 4K slide decks across the topics serious professionals study: GMAT, LSAT, MCAT, SAT, Investment Banking, Private Equity (LBOs & PE math), Private Credit, Quantitative Finance, Financial Accounting, Asset- Backed Securities, Volume Profile Analysis, Order Flow Trading, Market Microstructure, Volume Spread Analysis, Elliott Wave Theory, Volume-Price Analysis, and Public Offering Frameworks.

What's inside

Topics

View pricing · Read testimonials

or '$x$ plus 5' both mean the same thing, since addition doesn't care about order) — so people get used to not worrying about order, and then that same careless habit becomes fatal when subtraction (which absolutely DOES care about order) shows up instead.","courseId":"sat","publicSeo":true,"seoSlug":"the-less-than-reversal-15iun0"}

KomFi Academy — Stop doomscrolling. Get KomFi.

Turn wasted screen time into verifiable competence.

KomFi Academy is a curated training platform with 66,000+ practice questions, 25,000+ flashcards, on-demand video lectures, podcasts, and 4K slide decks across the topics serious professionals study: GMAT, LSAT, MCAT, SAT, Investment Banking, Private Equity (LBOs & PE math), Private Credit, Quantitative Finance, Financial Accounting, Asset- Backed Securities, Volume Profile Analysis, Order Flow Trading, Market Microstructure, Volume Spread Analysis, Elliott Wave Theory, Volume-Price Analysis, and Public Offering Frameworks.

What's inside

Topics

View pricing · Read testimonials