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Cornerstone Nov 11 - 17 25 questions
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Monday 11 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄12 + 1⁄12

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x + 10 = 66

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 4cm

    Answer: 5cm
  4. 4. Ratio

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics

    Calculate the mean of: 48, 36, 19, 13, 15, 5, 37. Give your answer to 2 decimal places

    Answer: 24.71

Tuesday 12 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 3⁄6

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 2x + 6 = 24

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics

    Calculate the mean of: 23, 23, 17, 12, 44, 14. Give your answer to 2 decimal places

    Answer: 22.17

Wednesday 13 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 2⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 8x - 6 = 50

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 15.62cm
  4. 4. Ratio

    Share 78 in the ratio 2:1

    Answer: 52 and 26
  5. 5. Statistics

    Find the mean of: 8, 4, 16, 5, 12

    Answer: 9

Thursday 14 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄9 + 3⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x - 13 = 85

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio

    Divide 182 in the ratio 1:4:2

    Answer: 26, 104 and 52
  5. 5. Statistics

    Calculate the mean of: 25, 40, 50, 30, 38, 12, 25. Give your answer to 2 decimal places

    Answer: 31.43

Friday 15 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 2⁄3

    Answer: 1⁄1
  2. 2. Algebra

    Solve: 3x + 12 = 42

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Divide 171 in the ratio 4:2:3

    Answer: 76, 38 and 57
  5. 5. Statistics

    Find the mean of: 7, 15, 19, 19

    Answer: 15