↑ Return to Number Sense Workbook and Video Lessons Volume 1

Pages 26 through 46

Pages 5 through 25
Pages 47 through 65

Pg 26 – Approximating multiplying by 142857
Pg 27 – Multiplying by 3367
Pg 28 – Multiplying by 143
Pg 29 – Add to 1 Mixed Numbers
Pg 30 – Difference of Two Squares
Pg 31 – Sum of Two Squares
Pg 32 – Greatest Common Factor
Pg 33 – Least Common Multiple
Pg 34 – Multiplying a x a/b
Pg 35 – Multiplying Mixed Numbers with Same Fractions
Pg 36 – Multiplying Mixed Numbers with Different Fractions
Pg 37 – Converting Mixed Numbers Percents to fractions
Pg 38 – Adding inverse fractions
Pg 39 – Adding consecutive Integers
Pg 40 – Divisibility Rules
Pg 41 – Multiplying a whole number by a mixed number
Pg 42 – Union/Non-Union
Pg 43 – Set Theory
Pg 44 – Base b to Base 10
Pg 45 – Base 10 to Base b
Pg 46 – Determining the Base of a Number

12 comments

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Math Rocks

January 5, 2016 at 10:57 pm (UTC 0) Link to this comment

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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
1. anthony gillespey
  
  January 16, 2016 at 3:54 am (UTC 0) Link to this comment
  
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  Just remember the rules of math still apply. In base two you need to carry when you make 2. Subtract borrow 2 etc.
  1. noah
    
    November 1, 2018 at 9:53 pm (UTC 0) Link to this comment
    
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    is there a calculator book
    1. anthony gillespey
      
      November 8, 2018 at 6:48 pm (UTC 0) Link to this comment
      
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      Not yet but one day there might be.
Math Rocks

February 24, 2017 at 7:48 pm (UTC 0) Link to this comment

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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.
1. anthony gillespey
  
  March 21, 2017 at 10:00 pm (UTC 0) Link to this comment
  
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  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.
  1. _mAtH
    
    February 16, 2019 at 12:28 am (UTC 0) Link to this comment
    
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    Does this trick only work for dividing by 11?
    1. anthony gillespey
      
      May 22, 2019 at 3:47 pm (UTC 0) Link to this comment
      
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      You could make new tricks with other numbers but this is for 11’s
Number Sense Rocks

November 22, 2017 at 11:15 pm (UTC 0) Link to this comment

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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
1. anthony gillespey
  
  August 28, 2018 at 4:39 pm (UTC 0) Link to this comment
  
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  Yep exactly .
Awesome

June 6, 2019 at 5:08 pm (UTC 0) Link to this comment

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Is there a trick for 7 1/3 * 14 1/3
1. anthony gillespey
  
  August 22, 2019 at 7:38 pm (UTC 0) Link to this comment
  
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  Yep book one has this information.