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Cornerstone Feb 11 - 17 25 questions
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Monday 11 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 3⁄6

    Answer: 9⁄14
  2. 2. Algebra

    Solve: 6x + 4 = 40

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 15.56cm
  4. 4. Ratio

    Divide 84 in the ratio 3:1:2

    Answer: 42, 14 and 28
  5. 5. Statistics

    Calculate the mean of: 36, 50, 15, 16, 33, 38, 41. Give your answer to 2 decimal places

    Answer: 32.71

Tuesday 12 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 1⁄8

    Answer: 1⁄4
  2. 2. Algebra

    Solve: 5x + 5 = 60

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 192 in the ratio 4:3:1

    Answer: 96, 72 and 24
  5. 5. Statistics

    Calculate the mean of: 34, 41, 23, 44, 46, 13, 29, 14

    Answer: 30.5

Wednesday 13 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 1⁄3

    Answer: 19⁄21
  2. 2. Algebra

    Solve: 6x - 12 = 72

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.18cm
  4. 4. Ratio

    Divide 126 in the ratio 3:1:2

    Answer: 63, 21 and 42
  5. 5. Statistics

    Find the mean of: 2, 16, 20, 13, 9

    Answer: 12

Thursday 14 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 2⁄5

    Answer: 19⁄35
  2. 2. Algebra

    Solve: 3x - 17 = 13

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 9.9cm
  4. 4. Ratio

    Share 84 in the ratio 2:1

    Answer: 56 and 28
  5. 5. Statistics

    Calculate the mean of: 48, 25, 8, 12, 20, 49, 30, 27. Give your answer to 2 decimal places

    Answer: 27.38

Friday 15 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 4⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 3x + 5 = 26

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio

    Share 114 in the ratio 1:2

    Answer: 38 and 76
  5. 5. Statistics

    Find the mean of: 7, 21, 20, 14, 8

    Answer: 14