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Cornerstone Aug 12 - 18 25 questions
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Monday 12 August 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄9 + 2⁄9

    Answer: 5⁄9
  2. 2. Algebra

    Solve: 7x + 15 = 85

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio

    Divide 90 in the ratio 4:2:3

    Answer: 40, 20 and 30
  5. 5. Statistics

    Find the mean of: 6, 18, 12

    Answer: 12

Tuesday 13 August 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 5⁄7

    Answer: 17⁄14
  2. 2. Algebra

    Solve: 8x - 8 = 112

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 108 in the ratio 4:1:1

    Answer: 72, 18 and 18
  5. 5. Statistics

    Calculate the mean of: 20, 22, 40, 40, 19, 7, 23. Give your answer to 2 decimal places

    Answer: 24.43

Wednesday 14 August 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 2⁄3

    Answer: 13⁄15
  2. 2. Algebra

    Solve: 4x - 11 = 21

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Share 51 in the ratio 2:1

    Answer: 34 and 17
  5. 5. Statistics

    Find the mean of: 17, 4, 19, 8

    Answer: 12

Thursday 15 August 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 3x + 8 = 44

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.93cm
  4. 4. Ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics

    Calculate the mean of: 48, 44, 6, 22, 23, 18, 27. Give your answer to 2 decimal places

    Answer: 26.86

Friday 16 August 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 5x + 9 = 69

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 15.56cm
  4. 4. Ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics

    Calculate the mean of: 42, 30, 35, 6, 39, 33, 50. Give your answer to 2 decimal places

    Answer: 33.57