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Cornerstone Feb 29 - Mar 6 25 questions
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Monday 29 February 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 5⁄8

    Answer: 57⁄40
  2. 2. Algebra

    Solve: 7x + 3 = 66

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Share 100 in the ratio 3:2

    Answer: 60 and 40
  5. 5. Statistics

    Find the mean of: 7, 3, 7, 3, 20

    Answer: 8

Tuesday 1 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄11 + 4⁄11

    Answer: 5⁄11
  2. 2. Algebra

    Solve: 8x - 19 = 45

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics

    Find the mean of: 5, 15, 2, 10, 3

    Answer: 7

Wednesday 2 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 4⁄6

    Answer: 29⁄21
  2. 2. Algebra

    Solve: 7x - 19 = 65

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio

    Share 140 in the ratio 3:4

    Answer: 60 and 80
  5. 5. Statistics

    Find the mean of: 2, 8, 11

    Answer: 7

Thursday 3 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 6x + 13 = 85

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics

    Calculate the mean of: 9, 49, 22, 12, 34, 23, 27, 41. Give your answer to 2 decimal places

    Answer: 27.13

Friday 4 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄11 + 2⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 7x + 6 = 41

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 96 in the ratio 2:3:3

    Answer: 24, 36 and 36
  5. 5. Statistics

    Find the mean of: 12, 12, 3

    Answer: 9