median
don steward
mathematics teaching 10 ~ 16

Thursday, 17 November 2011

decimal steps



















as far as I'm aware solutions to the two question 4s are:
decimal steps (i) Q4 : has two solutions (maybe more)
  • A = + 0.2 , B = x 3 , C = x 2
  • A = + 0.6 , B = x 3 , C = + 1
decimal steps (ii) Q4 : A = x 10 , B = + 2 , C = divide by 5 (a tough question)

these two questions are difficult but some groups of 11 year olds have obtained solutions...

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