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Math Rocks
January 5, 2016 at 10:57 pm (UTC 0) Link to this comment
How do you do a problem where x base 2 minus y base 2 =____ base 2, or 1011 base 2 – 1001 base 2= ___ base 2? I saw something in this format on the number sense TMSCA quiz. thanks
anthony gillespey
January 16, 2016 at 3:54 am (UTC 0) Link to this comment
Just remember the rules of math still apply. In base two you need to carry when you make 2. Subtract borrow 2 etc.
Math Rocks
February 24, 2017 at 7:48 pm (UTC 0) Link to this comment
Hi Mr, Gillespy,
I understand how to find IF a number is divisible by 11, but how do you know how much remainder a number divided by 11 has? For example, 4273 divided by 11.
anthony gillespey
March 21, 2017 at 10:00 pm (UTC 0) Link to this comment
I am re writting my book this summer and I have a better method. Basically start with the far right number and do this. 3 – 7 + 2 – 4 = -9 if the number you get is positive thats the remainder. If its negative subtract it from 11 so in this case the answers remainder 2.
Number Sense Rocks
November 22, 2017 at 11:15 pm (UTC 0) Link to this comment
Hi there
Even though you can kind of do these kind of problems in your head, I wanted to know if there is a faster way to do a problem like 12 1/2 x 88 or something like that. Would it be divide it by 88 by 8 and add 2 zeroes?
Thanks
anthony gillespey
August 28, 2018 at 4:39 pm (UTC 0) Link to this comment
Yep exactly .