Mystery Numbers

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If 90 D in a RA stands for 90 degrees in a right angle, what do the following stand for?

 

 

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  • Mrs Toogood, WHS
  • Monday, July 02, 2007
  • "These are good fun - more please"
  • Sara, Bradford
  • Tuesday, June 30, 2009
  • "I think this kind of activity is bad - it encourages kids to think of a letter as standing for a thing instead of a number which damages their developemnt of understanding algebra. For example 7d in a w is 7 days in a week in your puzzle but algebraically to change weeks to days we do d=7w or "to find the number of days you multiply the number of weeks by 7" because in algebra we use the w to mean the number of weeks not one week - I think it deepens misunderstandings."
  • Year 10, Coln House
  • Wednesday, June 30, 2010
  • "We think these type of maths starters are very thought provoking and make your mind get on track.
    We think Sara from Bradford is wrong about saying that the algebra can be misunderstood, it's only in fun."
  • 10 Ma2b, Ilfracombe Arts College
  • Wednesday, September 08, 2010
  • "We agree with Year 10 in Coln and think Sara needs to lighten up a bit."
  • Jenny, St Clement Of Rome
  • Friday, September 10, 2010
  • "1000M in a K."
  •  

  • Tamia Nero, Berrywood Primary School In Hedge End
  • Saturday, June 18, 2011
  • "I think this starter of the day was very easy but I still had fun doing it."

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This starter has scored a mean of 3.8 out of 5 based on 83 votes.

 

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Answers

  • 180 Degrees in a Triangle
  • 7 Days in a Week
  • 3 Feet in a Yard
  • 10 Millimetres in a Centimetre
  • 366 Days in a Leap Year
  • 7 is the Square Root of Forty Nine
  • Snow White and the 7 Dwarfs

 

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