BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

Number line need help

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 30
Joined: Sun Jul 26, 2009 9:58 am
Location: Kolkata
by sanjib.saha » Tue Aug 28, 2012 8:59 pm
Hello, we all know that 1 < 2. If we multiply each side by -1 then the sign flips. So -1 > -2, which is correct. Now 1/2 < 1 then if we multiple each side by -1 then the sign flips. So we get -1/2 > -1, which is incorrect. So am I misunderstanding the multiply by -1 concept?
Sanjib
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 435
Joined: Wed Nov 16, 2011 7:27 amFollowed by: 16 members
Thanked: 48 times

by alex.gellatly » Tue Aug 28, 2012 9:11 pm
sanjib.saha wrote:Hello, we all know that 1 < 2. If we multiply each side by -1 then the sign flips. So -1 > -2, which is correct. Now 1/2 < 1 then if we multiple each side by -1 then the sign flips. So we get -1/2 > -1, which is incorrect. So am I misunderstanding the multiply by -1 concept?
You are not misunderstanding the multiply (or divide) by a negative number you flip the sign. What are you missunderstand, however, is that -1/2 is > -1 For a visual representation look at the line:

______-2___A__-1___B__0_____1______2_____ <-- Where would -1/2 be at A or B? at B or course! That means that -1/2 > -1.

Let me know if this helps
A useful website I found that has every quant OG video explanation:

https://www.beatthegmat.com/useful-websi ... tml#475231
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 30
Joined: Sun Jul 26, 2009 9:58 am
Location: Kolkata

by sanjib.saha » Tue Aug 28, 2012 9:34 pm
Yes it does help
Sanjib
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1