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Cornerstone Aug 5 - 11 25 questions
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Monday 5 August 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 4⁄7

    Answer: 26⁄21
  2. 2. Algebra

    Solve: 8x - 16 = 88

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 14.21cm
  4. 4. Ratio

    Divide 135 in the ratio 2:4:3

    Answer: 30, 60 and 45
  5. 5. Statistics

    Calculate the mean of: 36, 46, 6, 17, 15, 49, 23. Give your answer to 2 decimal places

    Answer: 27.43

Tuesday 6 August 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 3⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 6x - 17 = 31

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio

    Divide 105 in the ratio 3:1:1

    Answer: 63, 21 and 21
  5. 5. Statistics

    Calculate the mean of: 14, 47, 40, 22, 37, 49, 24, 6. Give your answer to 2 decimal places

    Answer: 29.88

Wednesday 7 August 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 2⁄5

    Answer: 41⁄40
  2. 2. Algebra

    Solve: 7x + 13 = 76

    Answer: x = 9
  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 330 in the ratio 4:4:3

    Answer: 120, 120 and 90
  5. 5. Statistics

    Find the mean of: 5, 6, 5, 17, 2

    Answer: 7

Thursday 8 August 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 3x + 7 = 40

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio

    Divide 126 in the ratio 1:1:4

    Answer: 21, 21 and 84
  5. 5. Statistics

    Find the mean of: 5, 16, 12

    Answer: 11

Friday 9 August 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 2⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 2x - 12 = 10

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 80 in the ratio 3:2:3

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

    Calculate the mean of: 38, 44, 28, 31, 41, 39. Give your answer to 2 decimal places

    Answer: 36.83