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Cornerstone Sep 26 - Oct 2 25 questions
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Monday 26 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 2⁄7

    Answer: 24⁄35
  2. 2. Algebra

    Solve: 2x + 4 = 18

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio

    Divide 112 in the ratio 2:1:4

    Answer: 32, 16 and 64
  5. 5. Statistics

    Calculate the mean of: 47, 9, 33, 47, 32, 7, 34, 43

    Answer: 31.5

Tuesday 27 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄9 + 5⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 2x - 17 = 3

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Divide 110 in the ratio 2:1:2

    Answer: 44, 22 and 44
  5. 5. Statistics

    Find the mean of: 14, 2, 6, 6

    Answer: 7

Wednesday 28 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄10 + 1⁄10

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 6x - 17 = 13

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Divide 105 in the ratio 1:1:3

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

    Find the mean of: 4, 15, 13, 11, 17

    Answer: 12

Thursday 29 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 3⁄4

    Answer: 23⁄20
  2. 2. Algebra

    Solve: 4x + 3 = 39

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio

    Divide 72 in the ratio 2:1:1

    Answer: 36, 18 and 18
  5. 5. Statistics

    Calculate the mean of: 15, 10, 17, 9, 32, 20. Give your answer to 2 decimal places

    Answer: 17.17

Friday 30 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 3⁄5

    Answer: 36⁄35
  2. 2. Algebra

    Solve: 4x + 5 = 53

    Answer: x = 12
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Divide 196 in the ratio 3:2:2

    Answer: 84, 56 and 56
  5. 5. Statistics

    Calculate the mean of: 41, 38, 16, 22, 37, 18, 33. Give your answer to 2 decimal places

    Answer: 29.29