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Cornerstone Oct 25 - 31 25 questions
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Monday 25 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 3⁄7

    Answer: 4⁄7
  2. 2. Algebra

    Solve: 3x + 15 = 27

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio

    Share 40 in the ratio 2:3

    Answer: 16 and 24
  5. 5. Statistics

    Find the mean of: 16, 16, 7

    Answer: 13

Tuesday 26 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 7⁄8

    Answer: 81⁄56
  2. 2. Algebra

    Solve: 3x + 7 = 37

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics

    Find the mean of: 2, 4, 2, 18, 9

    Answer: 7

Wednesday 27 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄12 + 4⁄12

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 8x - 17 = 39

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics

    Calculate the mean of: 36, 31, 12, 25, 34, 23. Give your answer to 2 decimal places

    Answer: 26.83

Thursday 28 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 3x - 16 = -4

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.44cm
  4. 4. Ratio

    Share 70 in the ratio 4:3

    Answer: 40 and 30
  5. 5. Statistics

    Calculate the mean of: 46, 5, 12, 9, 31, 13. Give your answer to 2 decimal places

    Answer: 19.33

Friday 29 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 1⁄5

    Answer: 13⁄15
  2. 2. Algebra

    Solve: 6x + 7 = 61

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 60 in the ratio 3:2

    Answer: 36 and 24
  5. 5. Statistics

    Find the mean of: 14, 4, 15

    Answer: 11