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Math Dictionary

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Transcript

  • 1. Math Dictionary# 2
    By. Derek Marsh and Tyler Henderson
  • 2. Integers
    All the positive and negative numbers and zero.
  • 3. Absolute Value
    The distance from zero on a number line.
  • 4. Coordinate System
    Used to graph it is made up of intersecting lines.
  • 5. X and Y-axis
    X=horizontal number line
    Y=vertical number line
    Y-Axis
    X-Axis
  • 6. Origin
    Where the number lines cross
    Origin
  • 7. Quadrant
    The four sections of the coordinate system
    #2
    #1
    #3
    #4
  • 8. Ordered Pair
    Pair of numbers that tell you where to graph a point.
    Ordered Pair
  • 9. X and Y-coordinate
    X= where to go on the X axis
    Y=where to go on the Y axis
    Y-coordinate
    X-coordinate
  • 10. Rules for integer operation
    1.The sum of two positive integers will always be positive, to get the answer you add.
    2.The sum of two negative integers will always be negative, to get the answer you add.
    3.The sum of two integers with different signs will have the sign of the larger number, to get the answer you subtract.
    4.To subtract two integers, change the subtraction to addition and change the sign of the number to its opposite.
    Ex. (add a line, change the sign)
    5.The product of two integers with the same sign will always be positive, to get the answer you multiply.
    6.The product of two different signs will always be negative, to get the answer multiply.
    7. The quotient of two integers with the same signs will always be positive, to get the answer you divide.
    8.The quotient of two integers with different signs will be negative, to get the answer you divide.
  • 11. Problems
    -6+-8=-14 12/-3=-4
    -5+7=2 -15/5=-3
    3+15=18
    12-18=-6
    4-(-7)+11
    -12*-7=84
    11*-8=-88
    -3*2=-6
    -14/-2=7
  • 12. Mean
    The average of a group of numbers.
    24+345+-23+45+57=448 and then you divide 448 by 5.
  • 13. Commutative
    I doesn’t matter what order you put the numbers in.
  • 14. Associative
    You can put the grouping symbols around any numbers.
  • 15. Identity
    Anything added by 0 or multiplied by 1 is the number it is to begin with
    5+0=5
    5*1=5
  • 16. Multiplicative Inverse
    It is the reciprocal or the opposite of the number.
    1/5’s reciprocal(multiplicative inverse) is 5/1
  • 17. Distributive
    You do not need the grouping symbols if you distribute things into the problem.

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