examination reviewer of stem

• fraction  is a part of a whole or group
• -comes from the latin word fraction meaning the act of breaking into pieces or dividing into parts
• types of fraction

  proper fraction

  improper fraction

  mixed number

  unit fraction

  similar fraction

  dissimilar fraction
• numerators tell the number of the equal part taken or used
• denominators tells how many equal parts are there in one whole
• a proper fraction is always less than 1
• a mixed number consists of both fractions and whole numbers
• an improper fraction has numerator greater than denominator
• a unit fraction is a fraction whose numerator is 1
• similar fractions have same denominators but different numerators
• percentage is the portion of the whole based on the rate.

  it is usually followed by the

  word "is"
• Rate is the percent of the whole

  it has the percent sysbol(%)
• Base is the whole were talking about it is written after the word (of) or the phrase "percent of"
• finding the discount formula

  D=OP•DR

  finding the discount rate formula

  DR=D/OP or D ÷OP

  finding the original price formula

  OP=D÷DR
• formula:

  ST=SP•RT

  TC=SP+ST

  RT=ST÷SP

  SP=ST÷RT
• formula

  INTERES=PRT

  PRINCIPAL=I÷RT

  RATE=I×PR

  TIME=I÷PR

  TOTAL AMOUNT=P+I
• net is a close plane figure that can be folded into a closed three

  dimensional figure
• plane figure are used to show the net of solid figure all the flat

  part of a solid figure are called faces
• sequence is a set of numbers written in a special order by the

  application of a definite rule
• Variable

  A letter or symbol that represents a number
• Coefficient


  A constant value used with the variable
• Constant


  A fixed value that does not change
• Coefficient

  2
• Variable


  x
• Constant


  5
• Term


  A number or variable, a product, or quotient of a number and variable separated by plus (+) minus (-) slash (/)
• Algebraic expression


  Mathematical phrase<|>No equal sign<|>Value of letter or symbol can change
• Algebraic equation

  A+1=P+P-<|>Mathematical sentence<|>With equal sign<|>Value of letter or symbol can't be changed
• Speed


  A scalar quantity that refers to "how fast an object is moving". Speed can be thought of as the rate by which an object covers distance.
• Distance

  The total length between two positions
• Time


  The quantity measured or measurable period during which an action, process, or condition exists or continues