My Math Forum  

Go Back   My Math Forum > Math Forums > Math

Math General Math Forum - For general math related discussion and news


Reply
 
LinkBack Thread Tools Display Modes
January 5th, 2017, 07:39 PM   #1
Newbie
 
Joined: Jan 2017
From: Nowhere

Posts: 1
Thanks: 0

My Teacher Isn't Believing Me That He Did His Binary Wrong

For the number 356 to binary, I got "101100100" and I used several different online converters to confirm, and did a trick that my teacher taught me awhile back. He used the Windows 10 calculator and the divide method and got "001011010" but with his, it isn't converted properly because the 8th and 9th number has to be less than 128.

I did my method on the test and I know he's going to mark them wrong. Am I correct?
BlakeB is offline  
 
January 6th, 2017, 06:36 AM   #2
Global Moderator
 
Joined: Dec 2006

Posts: 16,187
Thanks: 1145

You are correct if the number 356 is decimal. The binary number 001011010 corresponds to the decimal number 90.
skipjack is offline  
January 6th, 2017, 08:21 AM   #3
Newbie
 
Joined: Mar 2016
From: UK

Posts: 20
Thanks: 1

For the binary number you have: 101100100

The LSB (Least Significant Bit - Rightmost Number) is 1 in decimal, followed by 2, 4 etc.

Your MSB (Most Significant Bit - Leftmost Number) is 256 in decimal.

Therefore you have, 4 + 32 + 64 + 256 = 356.

Your answer is indeed correct.

The values for each bit come from the base of the number, take 1001 in binary for example. In decimal it is:

$\displaystyle 1\times2^0+0\times2^1+0\times2^2+1\times2^3= 1\times1+0\times2+0\times4+ 1 \times 8=9$
edwardholmes91 is offline  
Reply

  My Math Forum > Math Forums > Math

Tags
believing, binary, teacher, wrong



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
A teacher marked my quiz answer wrong -Help wizard1969 Algebra 35 April 3rd, 2016 08:06 PM
having trouble believing combinations NotYoung Algebra 3 March 13th, 2014 06:22 PM
My teacher is wrong, RIGHT? yogazen2013 Algebra 2 August 26th, 2013 02:49 PM
Help me prove my teacher wrong! michaelodeon Advanced Statistics 5 February 1st, 2010 07:04 AM
Help! Is my son's teacher wrong? NatvAmer Algebra 2 May 7th, 2009 05:56 PM





Copyright © 2017 My Math Forum. All rights reserved.