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

14 comments

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    • Math Rocks on January 5, 2016 at 10:57 pm
    • Reply

    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. Just remember the rules of math still apply. In base two you need to carry when you make 2. Subtract borrow 2 etc.

        • noah on November 1, 2018 at 9:53 pm
        • Reply

        is there a calculator book

        1. Not yet but one day there might be.

    • Math Rocks on February 24, 2017 at 7:48 pm
    • Reply

    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. 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.

        • _mAtH on February 16, 2019 at 12:28 am
        • Reply

        Does this trick only work for dividing by 11?

        1. You could make new tricks with other numbers but this is for 11’s

    • Number Sense Rocks on November 22, 2017 at 11:15 pm
    • Reply

    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. Yep exactly .

    • Awesome on June 6, 2019 at 5:08 pm
    • Reply

    Is there a trick for 7 1/3 * 14 1/3

    1. Yep book one has this information.

    • Math Is Fun on June 4, 2020 at 3:28 pm
    • Reply

    Is there a trick for figuring out how many terms a sequence has?
    For example, how many terms does the sequence 2, 5, 8, 11, ……., 152 have?

    1. Yes its in the blue book

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