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Cornerstone Jun 24 - 30 25 questions
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Monday 24 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 1⁄3

    Answer: 16⁄21
  2. 2. Algebra

    Solve: 2x + 3 = 21

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 144 in the ratio 2:4:3

    Answer: 32, 64 and 48
  5. 5. Statistics

    Find the mean of: 19, 11, 5, 15

    Answer: 12.5

Tuesday 25 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra

    Solve: 5x - 12 = 38

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 10cm

    Answer: 15.62cm
  4. 4. Ratio

    Divide 207 in the ratio 4:1:4

    Answer: 92, 23 and 92
  5. 5. Statistics

    Calculate the mean of: 14, 6, 9, 30, 8, 39, 37

    Answer: 20.4

Wednesday 26 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 2⁄5

    Answer: 16⁄15
  2. 2. Algebra

    Solve: 2x - 18 = -4

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 120 in the ratio 2:1:2

    Answer: 48, 24 and 48
  5. 5. Statistics

    Calculate the mean of: 37, 37, 43, 8, 20, 13

    Answer: 26.3

Thursday 27 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 3x + 5 = 38

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 9cm

    Answer: 15cm
  4. 4. Ratio

    Divide 112 in the ratio 4:2:1

    Answer: 64, 32 and 16
  5. 5. Statistics

    Find the mean of: 5, 20, 4, 5

    Answer: 8.5

Friday 28 June 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄9 + 2⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 2x + 10 = 18

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Divide 145 in the ratio 1:2:2

    Answer: 29, 58 and 58
  5. 5. Statistics

    Find the mean of: 7, 17, 14, 4

    Answer: 10.5