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Cornerstone Jul 28 - Aug 3 25 questions
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Monday 28 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 1⁄4

    Answer: 23⁄28
  2. 2. Algebra

    Solve: 8x - 20 = 52

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio

    Divide 91 in the ratio 2:2:3

    Answer: 26, 26 and 39
  5. 5. Statistics

    Calculate the mean of: 46, 28, 13, 27, 14, 5, 27, 20

    Answer: 22.5

Tuesday 29 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 4x + 3 = 31

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 225 in the ratio 4:3:2

    Answer: 100, 75 and 50
  5. 5. Statistics

    Find the mean of: 11, 4, 18

    Answer: 11

Wednesday 30 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄11 + 2⁄11

    Answer: 8⁄11
  2. 2. Algebra

    Solve: 2x + 11 = 23

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio

    Divide 153 in the ratio 2:3:4

    Answer: 34, 51 and 68
  5. 5. Statistics

    Find the mean of: 13, 8, 6, 12, 6

    Answer: 9

Thursday 31 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 4⁄6

    Answer: 22⁄15
  2. 2. Algebra

    Solve: 7x - 7 = 63

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Divide 140 in the ratio 2:2:1

    Answer: 56, 56 and 28
  5. 5. Statistics

    Calculate the mean of: 11, 44, 22, 37, 27, 42, 24, 14. Give your answer to 2 decimal places

    Answer: 27.63

Friday 1 August 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 1⁄7

    Answer: 3⁄7
  2. 2. Algebra

    Solve: 6x + 12 = 48

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Share 98 in the ratio 3:4

    Answer: 42 and 56
  5. 5. Statistics

    Find the mean of: 2, 17, 3, 18, 15

    Answer: 11