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Cornerstone Sep 12 - 18 25 questions
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Monday 12 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄11 + 2⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 4x - 15 = 29

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 102 in the ratio 1:1:4

    Answer: 17, 17 and 68
  5. 5. Statistics

    Calculate the mean of: 48, 37, 22, 17, 11, 26, 40, 46. Give your answer to 2 decimal places

    Answer: 30.88

Tuesday 13 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 2⁄5

    Answer: 41⁄40
  2. 2. Algebra

    Solve: 7x + 15 = 99

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 9.43cm
  4. 4. Ratio

    Divide 98 in the ratio 4:2:1

    Answer: 56, 28 and 14
  5. 5. Statistics

    Find the mean of: 14, 17, 14

    Answer: 15

Wednesday 14 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 5⁄7

    Answer: 37⁄42
  2. 2. Algebra

    Solve: 2x + 4 = 14

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.49cm
  4. 4. Ratio

    Share 40 in the ratio 4:1

    Answer: 32 and 8
  5. 5. Statistics

    Calculate the mean of: 5, 14, 13, 44, 14, 24

    Answer: 19

Thursday 15 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 5x - 17 = 3

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics

    Find the mean of: 14, 2, 8

    Answer: 8

Friday 16 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 2⁄4

    Answer: 13⁄14
  2. 2. Algebra

    Solve: 8x - 13 = 35

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio

    Share 28 in the ratio 1:3

    Answer: 7 and 21
  5. 5. Statistics

    Find the mean of: 13, 16, 4, 13, 14

    Answer: 12