Maths

• Percentage of an amount
• FDP CONVERSION

  Converting decimal percentage fraction

  Ex - 0.35 - 35% - 35/ 100

  0.50 - 50%-50/100
• percentage of an amount

  50% = divide by 2

  25% = divide by 2

  10% = divide by 10

  5% = divide by 10% by 2
• Percentage of an amount

  1% = divide by 100

  try to work out. 10% of 50 = 5
• percentage of an amount

  
• wages

  money people earn for doing a jpob
• overtime

  time worked over time above the usual working hours
• Calculating percentage change

  10% of 300 = 30

  30% of 300 = 90 this as an example

  first you do 0.30 * 300 = 90
• express change as a percentage

  percentage profit = profit / original * 100%

  percentage loss = loss / original * 100%

  percentage change = percentage/ original * 100%

  20/25 * 100% - 4/5 -90%
• gross pay

  the total amount earned
• take

  home pay the amount you receive after taxes and deduction
• Vat

  vat can be any amount as a percentage that you have to add on like 10 = vat 5% so 5% of 10 is 9.5%
• tax

  money that a government called to play for public spending

  Q1. A desk is £186 inc vat ex vat 150 180 of 10% 18*2 150 + 36= 186
• Reverse percentages

  How to work it out - divide by the amount of percentage then mulitiply by 100

  
• exchange rate

  £ 1 = 54 birr times both side by 20

  £ 20 = 1680 birr
• simple interest

  interest that is calculated as a percentage of the original amount of compound interest
• compound interest

  interest that is calculated on both the original amount and any interest amount has all ready been earned
• compound interest

  p*(decimal multiply)

  p=priceable amount

  a=number of years
• Unit pricing

  ex there are 100 pencil in a box - 10 boxes of a pencil cost £30

  how much does one pencil cost £3
• compound interest

  A=p(1+r/100)n

  A= represents the final amount

  P= the original amount

  r = interest rate given over period

  n = represented the number of times the interest rate is applied over time
• cherry pie is delious and so is apple pie is delious
• Area of one circle = pie r 2

  Area of two circles = 2pier2

  2*pie 5 squared = 50 pie m squared

  2*pie *5 squared = 157.1msquared

  
• angles in a parallel line

  angle in a triangle add up to 180

  angle in a quadrilateral add up to 360

  angles in a full turn add up to 360

  angles in a straight line add up to 180
• angles in a parallel line

  vertically opposite angles are equal

  corresponding angles are (F)

  
• CIRCUMFERENCE / diameter = pie

  
• Conjecture

  alternate angles are equal

  co interior angles add up to 180

  corresponding angles are equal

  a conjectures is a conclusion based on a little bit of information

  2 adjacent abtuse angle together Form a 3rd obtuse angle

  ex 91 + 91 = 182 which is an reflex angle
• alternate angles - are equal

  4 Paris of vertically opposite angles are tranversal

  
• interior / ns angles in a polygon

  
• angle problems with algebra

  interior angles of a polygon = sum of interior angles /number of sides
• Changing the subject

  
• To work out x you do p+q-180=x

  
• angle problems with algebra - co interior angles add up to 180