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Cornerstone Sep 19 - 25 25 questions
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Monday 19 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 1⁄5

    Answer: 13⁄40
  2. 2. Algebra

    Solve: 3x - 19 = 2

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio

    Share 25 in the ratio 3:2

    Answer: 15 and 10
  5. 5. Statistics

    Find the mean of: 4, 16, 7

    Answer: 9

Tuesday 20 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 4x - 15 = 17

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 39 in the ratio 2:1

    Answer: 26 and 13
  5. 5. Statistics

    Calculate the mean of: 27, 48, 28, 48, 20, 5. Give your answer to 2 decimal places

    Answer: 29.33

Wednesday 21 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 2⁄3

    Answer: 20⁄21
  2. 2. Algebra

    Solve: 5x + 9 = 49

    Answer: x = 8
  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 44 in the ratio 1:3

    Answer: 11 and 33
  5. 5. Statistics

    Find the mean of: 3, 7, 2, 13, 15

    Answer: 8

Thursday 22 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 2⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 5x + 9 = 24

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 100 in the ratio 4:1

    Answer: 80 and 20
  5. 5. Statistics

    Find the mean of: 5, 5, 17, 21

    Answer: 12

Friday 23 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 2⁄5

    Answer: 19⁄35
  2. 2. Algebra

    Solve: 6x - 6 = 78

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics

    Calculate the mean of: 18, 6, 12, 27, 16, 38, 15. Give your answer to 2 decimal places

    Answer: 18.86