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Cornerstone Aug 1 - 7 25 questions
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Monday 1 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra

    Solve: 6x - 7 = 41

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 9.43cm
  4. 4. Ratio

    Divide 84 in the ratio 1:1:2

    Answer: 21, 21 and 42
  5. 5. Statistics

    Calculate the mean of: 36, 42, 41, 17, 24, 29

    Answer: 31.5

Tuesday 2 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 2⁄3

    Answer: 19⁄15
  2. 2. Algebra

    Solve: 6x - 10 = 74

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 120 in the ratio 1:1:3

    Answer: 24, 24 and 72
  5. 5. Statistics

    Calculate the mean of: 6, 15, 29, 38, 12, 48, 26. Give your answer to 2 decimal places

    Answer: 24.86

Wednesday 3 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄9 + 2⁄9

    Answer: 5⁄9
  2. 2. Algebra

    Solve: 7x + 4 = 74

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio

    Divide 175 in the ratio 3:3:1

    Answer: 75, 75 and 25
  5. 5. Statistics

    Find the mean of: 2, 3, 20, 11

    Answer: 9

Thursday 4 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 3⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 5x + 11 = 31

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio

    Share 90 in the ratio 1:4

    Answer: 18 and 72
  5. 5. Statistics

    Calculate the mean of: 13, 15, 37, 28, 28, 44

    Answer: 27.5

Friday 5 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 4x - 11 = 29

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Share 105 in the ratio 3:4

    Answer: 45 and 60
  5. 5. Statistics

    Find the mean of: 18, 12, 8, 18, 9

    Answer: 13