Maths foundation

• list of prime numbers:

  2,3,5.7,11,13,17,19,23,29
• Square numbers are a result of multiplying a number by itself
• How do we work out a decimal to a percentage?

  x 100
• percentage to decimal?

  / 100
• Decimal to fraction?

  conversion, put them either over 10, or 100 and lastly, see if they are simplifiable
• Fraction to decimal?

  Divide two numbers together
• What would the decimal 0.31 be as a percentage?

  31%
• What would the decimal 0.185 be as a fraction?

  18.5
• What would the fraction 0.204 be as a percentage?

  20.4%
• 3 percent as a decimal?

  0.03
• All angles on a straight line add up to 180*
• all angles on a point add up to 360*
• How do we work out the range?

  biggest - smallest
• to work out a fraction of an amount, we firstly divide the number by the denominator and x our answer by our numerator
• To work out best buy, we have to figure out how much each option is for only 1 of them. then, we do the price / quantity to give us our decimal in order to evaluate which is cheapest.
• A film starts at 7:45 am. the film lasts 98 minutes. What time does the film finish?

  9:23am
• 120 mins to hours

  2hrs
• 4 hours to minuites

  240 mins
• stem and leaf diagrams:

  • key e.g 2/9 = 29.
  • write all staring numbers in order down the side
  • place the other digit with that integer next to it
• 2.7m -> cm =

  270cm
• When sharing ratio, we add the two numbers in the ratio together and then divide them by the integer for example:

  share £20 in the ratio of 2:3.

  + up 2 + 3 = 5 / 20 = 4.