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Cornerstone Aug 22 - 28 25 questions
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Monday 22 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 5⁄7

    Answer: 29⁄21
  2. 2. Algebra

    Solve: 4x + 14 = 30

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 9cm

    Answer: 10.82cm
  4. 4. Ratio

    Divide 114 in the ratio 1:3:2

    Answer: 19, 57 and 38
  5. 5. Statistics

    Calculate the mean of: 49, 41, 33, 20, 28, 47

    Answer: 36.3

Tuesday 23 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 5x - 9 = 21

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Divide 120 in the ratio 2:1:2

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

    Find the mean of: 4, 6, 13, 19, 2

    Answer: 8.8

Wednesday 24 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 4x - 6 = 18

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 45 in the ratio 3:2

    Answer: 27 and 18
  5. 5. Statistics

    Calculate the mean of: 29, 12, 48, 42, 6, 26, 48, 20

    Answer: 28.9

Thursday 25 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄6

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 3x + 8 = 26

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 13cm

    Answer: 13.93cm
  4. 4. Ratio

    Share 100 in the ratio 2:3

    Answer: 40 and 60
  5. 5. Statistics

    Find the mean of: 11, 9, 16, 13

    Answer: 12.25

Friday 26 August 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 7x + 8 = 43

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics

    Find the mean of: 2, 6, 2, 19, 18

    Answer: 9.4