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Cornerstone Jan 28 - Feb 3 25 questions
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Monday 28 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄8 + 4⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 5x + 15 = 60

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio

    Share 39 in the ratio 1:2

    Answer: 13 and 26
  5. 5. Statistics

    Find the mean of: 16, 3, 8, 9

    Answer: 9

Tuesday 29 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 1⁄4

    Answer: 17⁄20
  2. 2. Algebra

    Solve: 2x - 10 = -2

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics

    Calculate the mean of: 29, 11, 39, 37, 39, 6, 33. Give your answer to 2 decimal places

    Answer: 27.71

Wednesday 30 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 4⁄5

    Answer: 21⁄20
  2. 2. Algebra

    Solve: 5x - 10 = 40

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio

    Share 66 in the ratio 1:2

    Answer: 22 and 44
  5. 5. Statistics

    Calculate the mean of: 31, 17, 44, 22, 45, 33, 41, 43

    Answer: 34.5

Thursday 31 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄11 + 2⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 3x + 6 = 30

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Share 90 in the ratio 3:2

    Answer: 54 and 36
  5. 5. Statistics

    Find the mean of: 8, 8, 2

    Answer: 6

Friday 1 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄7 + 2⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 6x - 13 = 17

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 16.4cm
  4. 4. Ratio

    Share 80 in the ratio 1:4

    Answer: 16 and 64
  5. 5. Statistics

    Calculate the mean of: 10, 24, 32, 28, 42, 48. Give your answer to 2 decimal places

    Answer: 30.67