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Cornerstone May 31 - Jun 6 25 questions
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Monday 31 May 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 4⁄7

    Answer: 31⁄42
  2. 2. Algebra

    Solve: 7x + 4 = 46

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 180 in the ratio 1:1:4

    Answer: 30, 30 and 120
  5. 5. Statistics

    Find the mean of: 4, 16, 14, 7

    Answer: 10.25

Tuesday 1 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 3⁄6

    Answer: 19⁄14
  2. 2. Algebra

    Solve: 3x - 20 = 22

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 12cm

    Answer: 12.37cm
  4. 4. Ratio

    Divide 66 in the ratio 3:2:1

    Answer: 33, 22 and 11
  5. 5. Statistics

    Calculate the mean of: 10, 30, 34, 32, 41, 6, 46, 20

    Answer: 27.4

Wednesday 2 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 1⁄6

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 5x - 14 = 46

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 300 in the ratio 2:2:1

    Answer: 120, 120 and 60
  5. 5. Statistics

    Calculate the mean of: 22, 46, 23, 17, 5, 28

    Answer: 23.5

Thursday 3 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 2x + 7 = 15

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 4cm

    Answer: 12.65cm
  4. 4. Ratio

    Divide 162 in the ratio 1:4:4

    Answer: 18, 72 and 72
  5. 5. Statistics

    Find the mean of: 3, 8, 7

    Answer: 6

Friday 4 June 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 3⁄6

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 7x + 12 = 89

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 11cm

    Answer: 14.87cm
  4. 4. Ratio

    Share 96 in the ratio 2:1

    Answer: 64 and 32
  5. 5. Statistics

    Calculate the mean of: 37, 43, 13, 44, 19, 30

    Answer: 31